Twitter.com growth flat for past 3 months
quantcast.com
quantcast.com
Twitter is a massive content stream with all sorts of sources of content flowing through it, and when you're using Twitter, you can curate the sources of the content using lists and who you follow so that you get more of the content you want.
Over time, however, I have found myself interested in only a few content providers - to the point that I frequent their websites directly rather than Twitter itself. So I have paddled my boat off of the Mississippi that is Twitter and found a more comfortable, manageable home in a few smaller, content streams.