Systems, methods, and non-transitory computer-readable media can obtain a plurality of content items that are available to be presented in a content feed of a first user, wherein each content item has a corresponding lifespan that indicates when the content item expires and is no longer available for presentation. A content feed having at least a first content item from the plurality of content items can be provided to a computing device of the first user. A determination can be made that at least one second user has provided feedback for the first content item, the feedback indicating an up-vote or a down-vote of the first content item. The lifespan of the first content item can be adjusted based at least in part on the feedback.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A computer-implemented method comprising: obtaining, by a computing system, a plurality of content items that are available to be presented in a content feed of a first user, wherein each content item has a corresponding lifespan that indicates when the content item expires and is no longer available for presentation; providing, by the computing system, a content feed having at least a first content item from the plurality of content items to a computing device of the first user; determining, by the computing system, that at least one second user has provided feedback for the first content item, the feedback indicating an up-vote or a down-vote of the first content item; and causing, by the computing system, the lifespan of the first content item to be adjusted based at least in part on the feedback. 2. The computer-implemented method of claim 1, wherein the feedback indicates an up-vote, and wherein causing the lifespan associated with the first content item to be adjusted further comprises: causing, by the computing system, the lifespan of the first content item to be increased. 3. The computer-implemented method of claim 1, wherein the feedback indicates a down-vote, and wherein causing the lifespan associated with the first content item to be adjusted further comprises: causing, by the computing system, the lifespan of the first content item to be decreased. 4. The computer-implemented method of claim 1, the method further comprising: receiving, by the computing system, feedback for the first content item provided by the first user, the feedback indicating an up-vote or a down-vote of the first content item; and causing, by the computing system, the lifespan of the first content item to be adjusted based at least in part on the feedback from the first user. 5. The computer-implemented method of claim 1, wherein providing the content feed having at least the first content item further comprises: obtaining, by the computing system, a set of tags associated with the first content item, each tag describing subject matter in the first content item; and determining, by the computing system, a ranking for the first content item in the content feed of the first user based at least in part on the set of tags. 6. The computer-implemented method of claim 5, the method further comprising: training, by the computing system, a model to be used for ranking content items based at least in part on (i) the set of tags and (ii) the feedback provided by the first user for the first content item. 7. The computer-implemented method of claim 6, the method further comprising: determining, by the computing device, a second content item to be included in the content feed; obtaining, by the computing system, a set of tags associated with the second content item, each tag describing subject matter in the second content item; and determining, by the computing system, a ranking for the second content item in the content feed of the first user using the trained model. 8. The computer-implemented method of claim 1, the method further comprising: determining, by the computing system, that the lifespan of the first content item has expired; and removing, by the computing system, the first content item from the content feed. 9. The computer-implemented method of claim 8, wherein removing the first content item from the content feed further comprises: removing, by the computing system, the first content item from a content feed corresponding to the second user. 10. The computer-implemented method of claim 1, wherein an amount of adjustment to the lifespan of the first content item is based at least in part on a feedback history of the second user. 11. A system comprising: at least one processor; and a memory storing instructions that, when executed by the at least one processor, cause the system to perform: obtaining a plurality of content items that are available to be presented in a content feed of a first user, wherein each content item has a corresponding lifespan that indicates when the content item expires and is no longer available for presentation; providing a content feed having at least a first content item from the plurality of content items to a computing device of the first user; determining that at least one second user has provided feedback for the first content item, the feedback indicating an up-vote or a down-vote of the first content item; and causing the lifespan of the first content item to be adjusted based at least in part on the feedback. 12. The system of claim 11, wherein the feedback indicates an up-vote, and wherein causing the lifespan associated with the first content item to be adjusted further causes the system to perform: causing the lifespan of the first content item to be increased. 13. The system of claim 11, wherein the feedback indicates a down-vote, and wherein causing the lifespan associated with the first content item to be adjusted further causes the system to perform: causing the lifespan of the first content item to be decreased. 14. The system of claim 11, wherein the instructions further cause the system to perform: receiving feedback for the first content item provided by the first user, the feedback indicating an up-vote or a down-vote of the first content item; and causing the lifespan of the first content item to be adjusted based at least in part on the feedback from the first user. 15. The system of claim 11, wherein providing the content feed having at least the first content item further causes the system to perform: obtaining a set of tags associated with the first content item, each tag describing subject matter in the first content item; and determining a ranking for the first content item in the content feed of the first user based at least in part on the set of tags. 16. A non-transitory computer-readable storage medium including instructions that, when executed by at least one processor of a computing system, cause the computing system to perform a method comprising: obtaining a plurality of content items that are available to be presented in a content feed of a first user, wherein each content item has a corresponding lifespan that indicates when the content item expires and is no longer available for presentation; providing a content feed having at least a first content item from the plurality of content items to a computing device of the first user; determining that at least one second user has provided feedback for the first content item, the feedback indicating an up-vote or a down-vote of the first content item; and causing the lifespan of the first content item to be adjusted based at least in part on the feedback. 17. The non-transitory computer-readable storage medium of claim 16, wherein the feedback indicates an up-vote, and wherein causing the lifespan associated with the first content item to be adjusted further causes the computing system to perform: causing the lifespan of the first content item to be increased. 18. The non-transitory computer-readable storage medium of claim 16, wherein the feedback indicates a down-vote, and wherein causing the lifespan associated with the first content item to be adjusted further causes the computing system to perform: causing the lifespan of the first content item to be decreased. 19. The non-transitory computer-readable storage medium of claim 16, wherein the instructions further cause the computing system to perform: receiving feedback for the first content item provided by the first user, the feedback indicating an up-vote or a down-vote of the first content item; and causing the lifespan of the first content item to be adjusted based at least in part on the feedback from the first user. 20. The non-transitory computer-readable storage medium of claim 16, wherein providing the content feed having at least the first content item further causes the computing system to perform: obtaining a set of tags associated with the first content item, each tag describing subject matter in the first content item; and determining a ranking for the first content item in the content feed of the first user based at least in part on the set of tags.