When searching for the solution to a problem I most often use Google, and eventually end up here on Stack Overflow after reading forum posts and blogs that don't quite answer my question. Sometimes the search phrase I used is slightly or very different but still asks essentially the same question that the OP asked, or I wind up typing some variation of the search in SO's box that eventually after narrowing down my terms gets me to the right place.
It would be good to be able to add the search variations that lead me here (as data associated with the answer) so that it gets higher up the Google rankings (hopefully? am not a SEO guru) and helps out people with a similar problem, who like me, didn't type the right phrase in the first time. It could also help cut down on duplicate answers. Is it too risky for spam? would making the search phrases votable help with spam?