Collections are a type of timeline that can be controlled and hand-curated.

As a unit, collections operate under the following rules:

• Collections are created by users.
• Each collection has a name and description.
• The collection creator can add any public Tweet to the collection.
• When new Tweets are added, they appear at the top of the collection.
• Collections are public, have their own URL on twitter.com, and are viewable by all.
• By design, collections do not implement specific rules or logic for sourcing or adding Tweets, leaving that strategy entirely up to you.