Thanks Dianne, you bring up a lot of ideas for Twitter research. I've heard of a couple of those sites. I will check them out. I know that at some point there seemed to be a deluge of Twitter sites. Not sure how redundant some of them are to the more familiar ones. There are so many and some of them fall into different categories suited to their purpose.
Vi,
Recently I read about a few other apps related to Twitter followers.
Would love to hear your thoughts...
WEfollow
Twittergrader
Justtweetit
Twellow
I'm amazed at people that have 20,000 followers and have sent out less then 1000 tweets or sent out 2000 tweets but have less then 100 followers.