4. The method of claim 1 , further comprising: responsive to unlocking the topic for the first user, providing the first user with an ability to control how one or more second content items appear in a feed associated with the unlocked topic.
4. The method of claim 1 , further comprising: responsive to unlocking the topic for the first user, providing the first user with an ability to control how one or more second content items appear in a feed associated with the unlocked topic. 5. The method of claim 4 , wherein the one or more second content items are provided by one or more third users that are different than the first user.