I've read about a dozen articles from ThinkProgress over the last few months, and the one thing that ties them all together is that they are all incredibly sensationalist.
I think that ThinkProgress has good ideals (e.g. fighting the status quo), but very poor ideas - nearly all of the paragraphs that I've read contain one sort of logical fallacy or hyperbole.
I think perhaps ThinkProgress is an okay place to start an intellectual journey, but a very poor place to end one. Make sure that when you're reading that you think critically - very critically - or else you won't be able to draw reasonable conclusions.