ad should be merged with and made a synonym of ads - they both mean the same thing, one has an s, and one doesn't.
I've asked a similar question before and I'm also asking this on Area 51. But I'd like a response from people here. Should Wikis and Wikipedia be merged into Web Applications? Update: we don't seem ...
One of my questions got migrated here from SuperUser (which, by the way, I think was a mistake because I was asking about accesses to my Gmail account through IMAP, not about web applications). It ...
There is a Question asking for a recommendation and another asking for comprehensive differences. Are these so similar that they had to be merged? Look here too.