Features
Part of How to build platform timelines that survive review
Platform timelines: the phases services pass through and how to place one
An undated phase map for platform timelines: the stages services pass through, the move from growth to ranking, why the order repeats, and how to use the map.
What to take away
Platform timelines trace the phases a networked service passes through. This platform timelines timeline is cross-checked against the record. Facebook, Twitter, Instagram, Reddit and YouTube provide one set of checks. LinkedIn, MySpace, TikTok and Discord provide another. The order is stable. The dates are not.
The map is undated because no two services take the same time over any phase. A dated version would be wrong for all of them. This undated one is roughly right for most.
Read it as a map of where a service is, not when. A reader who can place a service on it can usually predict the next phase, which is more useful than a date. The single most useful move is to place a service by its feed, not by its age.
- Services pass through founding, invitation, opening, growth and ranking. Extraction and decline follow in roughly that order.
- Each phase has a characteristic experience for users and a characteristic incentive for the operator, and the two diverge as the phases advance.
- The phases are a pattern, not a law. Some services stop at a phase and stay there, usually by staying small.
- The record gives dates for individual platforms, not a universal schedule.
The phases, checked against Facebook, Twitter, Instagram, Reddit and YouTube
The phases, checked against the record
| Phase | What users experience | What the operator wants | What marks the transition out | Cross-check on the record |
|---|---|---|---|---|
| Founding | A small group, mostly known to each other; norms set by example | To find out whether the thing works | The first users who were not invited by a founder | Facebook launched at Harvard on Feb. 4, 2004. Twitter's first tweet was on March 21, 2006. |
| Invitation | Scarcity; being inside is itself a signal; the population grows by trusted introduction | Growth without losing the founding character | The invitation constraint is dropped, usually because growth is now the goal | LinkedIn launched on May 5, 2003, and grew through invitations before opening wider. Facebook required a school email until Sept. 2006. |
| Opening | A wave of newcomers; the founding norms strain; old members complain | Scale, as fast as possible | Volume outruns what the members can read | Facebook opened to anyone 13 and older with an email on Sept. 26, 2006. MySpace launched in Aug. 2003 without an invitation gate. |
| Growth | More content than anyone can see; the chronological feed becomes unusable | To keep people from leaving as the feed degrades | The service starts choosing what is shown | Facebook's News Feed arrived Sept. 5, 2006. YouTube launched in May 2005, and Google bought it for $1.65 billion in Oct. 2006. |
| Ranking | A feed selected by the service; reach becomes unpredictable; attention concentrates | Engagement, because engagement is now the measure | Revenue becomes the priority over growth | Facebook used EdgeRank by 2009. Instagram switched to a ranked feed in June 2016. Twitter began ranking some tweets in 2016, and made the ranked feed default with a toggle by 2018. |
| Extraction | Advertising, paid placement, paid features; the experience is tuned for the operator's income | Income from a population that cannot easily leave | The population starts to leave anyway, or a new service enters its founding phase | Facebook Ads launched in Nov. 2007. Twitter introduced Promoted Tweets in April 2010. Instagram added sponsored posts in Oct. 2013. Reddit Gold arrived in Jan. 2010. |
| Decline | Fewer new users; the population ages; the service optimizes harder for the ones who remain | To slow the exit | Closure, sale, or a long tail of persistence | MySpace sold to News Corp for $580 million in 2005 and to Specific Media for $35 million in 2011. Twitter was acquired by Elon Musk for $44 billion in Oct. 2022 and rebranded X in July 2023. |
The transition that matters
The move from growth to ranking determines everything after. Before, users chose what to see by choosing whom to follow, and the service delivered it.
The switch is easy to miss from outside. Users still see a feed; what changes is who chooses the items in it.
Before and after ranking
Before ranking
- Who chooses
- User follows
- Feed order
- Chronological
- User choice
- Instruction
- Criteria
- Visible
- Reversal
- Possible
After ranking
- Who chooses
- Service criteria
- Feed order
- Ranked
- User choice
- Input
- Criteria
- Unpublished
- Reversal
- Almost never
After the switch, the service chooses using criteria it does not publish. User choices become inputs to a system, not instructions. platform timelines risks examines what fails when a service ranks posts without stating the rule it ranks them by.
Most criticism of the later phases follows from this change. It has an understandable cause: a chronological feed at scale is unreadable. It is almost never reversed, because a ranked feed is what the extraction phase depends on.
A service that has made this transition is a different kind of thing from the one its early members joined. They are right to say so, even when they cannot say why.
Why the phases are stable: Facebook, Twitter, Instagram and MySpace
The order holds because each phase creates conditions for the next. Founding creates a character worth protecting, so invitation protects it. Invitation creates scarcity, which creates demand that the operator eventually meets by opening. Facebook followed that path, from one campus to open signups, and LinkedIn from invitations to a wider gate.
Opening creates volume, which breaks the chronological feed and forces ranking. Ranking creates an attention system that advertising buys, so extraction follows.
Extraction degrades the experience, and decline follows when degradation exceeds the cost of leaving. MySpace had weak lock-in once Facebook opened, and its population left.
The sequence is not a moral story. Each step is a reasonable answer to the problem the previous step created, which is why it repeats.
The cost of leaving is the variable that sets the timing. The network effect is the conventional name for the fact that a service is worth more to each user the more users it has.
The same fact means that leaving costs more the larger the service is. Standing built inside one service, online status and identity, does not carry to the next. A service with strong lock-in can sit in extraction for a very long time. One with weak lock-in passes through it quickly.
Where Facebook, Reddit, Discord and TikTok stop
Not every service runs the whole sequence. Some stop at invitation and stay small on purpose. Long-lived internet communities of that kind avoid the later phases by refusing the growth that triggers them.
Discord launched on May 13, 2015, with invite-based servers. It earns from Nitro subscriptions and server boosts, not from an ad feed. That keeps it closer to invitation and growth than to extraction.
Reddit launched on June 23, 2005, and ranked posts from the start. It has ads, but its front page is a set of user-chosen communities, not one ranked feed. It shows a service can enter the sequence at ranking.
TikTok launched internationally in Sept. 2017 with a ranked For You feed. It did not pass through a chronological growth phase. Its record is a reminder that the order is common, not universal.
Some services stop at growth without ranking, usually because they are not funded in a way that requires extraction. They remain usable to a population that has learned to cope with volume. Some are closed before reaching decline, by an owner with other priorities. Twitter bought Vine in Oct. 2012 and shut it down in Jan. 2017.
The general technology life cycle describes a similar arc for products in general. The version here is specific to services whose product is other people, which is why the phases are about population and not about features.
Using the map
- Check who pays for it. A service funded by its users can stop at growth. One funded by advertisers is pushed into extraction whether or not the operator intends it.
- Expect the next phase rather than the one on show. The feature users argue about today is often the one the operator is already replacing.
- Compare two services only at the same phase. A founding service and an extraction service are not rivals, whatever the coverage says.
- Discount the operator's account of which phase it is in. Operators describe growth as founding and extraction as growth, for reasons that are not dishonest but are not neutral.
- Treat each date as specific to one platform. A single dated schedule for every service would import all the failures the platform timelines page describes.
Common questions
Can a service go backwards?
Rarely, and usually by splitting. A group leaves an extraction-phase service to found a new one, which starts at founding. The original does not go back; a piece of its population does. MySpace did not return to its 2005 position after Facebook opened.
Does every service reach decline?
Every service that reaches extraction has so far. The ones that avoid decline stopped earlier, by staying small or by being funded in a way that did not require extraction. Discord has no ad feed and has not entered extraction.
Why no single date for every platform?
Because the phases run at different speeds on different services. A single date would be true for one and false for the rest.
