With the help of Klout.com, a web service that analyzes Twitter usage and influence, I've been looking at the full list of Members of Congress using the tool, looking for potentially interesting relationships in the data. With about 125 House Members now using Twitter (roughly 2/3 Rs and 1/3 Ds), many of them on a daily basis, there's a rich data set to look at. I've uploaded Klout's rankings of the House Members to ManyEyes, so if you want to entertain yourself by finding out where your favorite congresstwitter rates, go ahead. But I also thought it might be interesting to see if there's a relationship between how well a Member is using Twitter, or just more basic metrics like...