Twitter is huge! With millions of users sharing their opinions, links to articles that are of interest to them, and tidbits and facts about the areas they live, there is no limit to how that information can be used. This article will show a few more ways to dig deeper into the wealth of information on Twitter, with location-based searching, finding the hottest Twitter topics like lists and a few other goodies.
http://www.makeuseof.com/tag/10-websites-show-hottest-twitter-topic/