I have this problem with searching. Lets say I want to find some information on remote usability testing.

The first stop is normally google. However, what if I vaguely remember reading something on this subject before. Perhaps I would try searching my google history. What about my delicious bookmarks? Then again maybe I read it in my Google reader RSS feed.

That is a hell of a lot of different sources to search.

What I need is one tool that searches all of these and returns them as a single set of results which can be prioritised based on source and relevancy.

Does this already exist? Fancy building it for me? ;-)