Thread:MrParaduo/@comment-3183460-20180103001926/@comment-3183460-20180104160323

You can find all the particulars about the program in the link ;) In a nutshell, though, the program exists to highlight communities that are active and friendly. Communities are placed in the genre footer they deem most appropriate for their site, and then the footer is placed on the bottom of the main page.

The only ways communities can be removed from the footer is if they become toxic towards users or become inactive (as defined in the link). :)