TweetVolume is a twitter tool which helps in analyzing the most popular and frequently mentioned and used words in twitter by people.
Accd. to Mashable -
TweetVolume is a frequency search engine of sorts, giving you feedback, by way of graphical representation, how many times your search term has shown up on Twitter. That’s where the information stops, though. There is no way to see where your search terms are showing up on Twitter, and the data isn’t placed in the context of time. This isn’t a plugin or anything, so there’s no downloading involved, and it won’t feed you frequency information on particular words as you peruse Twitter. TweetVolume is a strictly fun and recreational tool that can be used for a variety of reasons, letting you decide your own details for how the information really came about.
You can enter upto 5 keywords and can find out which one is the most popular keyword of all. The most famous gadget, the famous celeb, famous politician and anything can be grossly estimated through this tool.
Check one of the example graphs which i got when comparing the 5 famous tech blogs – Mashable, techcrunch, techmeme, gizmodo and engadget. Techmeme wins!