I propose that something be done on SO to prevent ambiguous tagging. (and maybe this is happening and I don't know it, if so, disregard.)
For instance, in my spare time I'm looking at posts tagged Unity.
Unity is the example I'm looking at because it covers Unity as a Library for IoC (among other things) and Unity (or Unity3d) which isn't always tagged properly.
As someone struggling to get reputation (It takes me longer to get a solution than the people who are just quicker on the draw than I am... but I digress.) I don't know if this is covered higher up in the hierarchy of ranking, or if there might be a way to address this at the user level (e.g. a metatagging system whereby users get interesting posts based on tag+search result score...)
Well, happy discussion, and I hope this leads to something.