Twitter meter it's an cool website and this site will query an index of all the words and that should be sent to twitter's public time-line and a user friendly Graph Chart will show you some information what sort of folks are now talking on twitter publically.. I just bit checkout Google's statistics on Twitter meter and also search live.com and yahoo.com.
PS: On twitter meter might be I faced with a bug and that should be about "coma". You will see something like that — Results for: "google", "yahoo", "live". But, If you use "come" between of your two keywords that result will be only show the last keywords. But, If you write all of your keywords without "come" but a "space"; automatically a graph chart will be visible on to Twitter Meter with all of your keywords and that should be helpful for you to compare with others keywords.