1. An enterprise social networking database system configurable to cause: providing for display in a user interface on a first device of a first user: a feed of the enterprise social networking database system, and a publication element associated with the feed, the publication element configured to receive input data for sharing in the enterprise social networking database system; obtaining first input data from the first device via the publication element; identifying a referenced user in the first input data, the referenced user being associated with an @-mention in content of the publication element; creating a feed item comprising the first input data; sharing the feed item in one or more feeds of the enterprise social networking database system; obtaining second input data associated with the feed item from a plurality of second devices of a plurality of second users; identifying one or more of the second users as having submitted in the second input data one or more of: a comment on the feed item, a like of the feed item or a request to share the feed item; providing for display in the user interface on the first device a user interface (UI) element associated with the feed item, the UI element being user-selectable to cause creation of a group of users of the enterprise social networking database system; obtaining an indication from the first device that the UI element has been selected; and responsive to obtaining the indication: generating or updating one or more group data objects in a database to: create the group of users in association with the feed item, the creation of the group being based on satisfaction of a criterion or criteria, the criterion or criteria comprising identification of a user as capable of providing a solution, the solution being identified by the comment on the feed item, and subscribe the first user, the referenced user and the identified one or more second users to the group.