Have I mentioned how much I like Twitterfall? It's a quick way to sort through the Twittersphere for your particular interests. And it's not limited to people you're following.
Every couple of weeks, I log in and enter search terms like "ADHD" or "brain injury" or "positive psychology" and watch the tweets scroll down like little snowflakes.
If a tweet catches your eye, you can click through to the tweet or a hyperlink. Cool! Great way to keep up with the scientific literature as well as the buzz in the general media about topics important to your clinical work.
Here's a screenshot: