Sometimes Google's results aren't that useful and they don't answer your question. Maybe the query is imprecise or obscure, the results are outdated or you don't have the patience to check the first 100 results to find something helpful. Asking your Twitter followers or your Facebook friends could be a great idea. Google doesn't integrate with Twitter or Facebook, but it experiments with a new feature that shows a message below the list of results: "Want to ask your friends about [your query]? Ask on Google+".
Clicking the link opens a Google+ box that already includes a message: "Hi there! I have a question about [my query]..." Edit your message, click "Ask" and the first results could show up in a few seconds in Google's notification widget.
Maybe Google+ also will include a revamped version of Aardvark and you'll be able to send your question to the right people.