There are two reports about votes and searches, but I want to document a specific use case: listing bugs by number of votes. For instance, in MediaWiki we have a very hard time convincing people to upgrade, and the best selling point is always showing that we fixed stuff people cared about.
https://www.mediawiki.org/wiki/Manual:Upgrading#Why_upgrade.3F includes a link "See also the list of the most voted fixed issues", we'll need a way to do the same on phabricator (including old data, of course).