Social media of all kinds are a source of huge amounts of fresh information about news and events, likes and dislikes. But the signal-to-noice ratio is not good: Much, maybe most, of the material posted is personal and it can be hard to find the pertinent information. You need help to sift and sort the items, so why not try one of these five great real time search engines. There are all kinds of search engines out there, searching the real time web.