In my last post , I mentioned that even though I haven't read any of Heidi Heilig's books yet, I follow her on Twitter and she's amazing. That got me thinking - a whole lot of the people I follow on Twitter are authors, and thro ugh Twitter, they regularly brighten up my day with more than just their books. So I decided to highlight a few of my favorites in this post! (And, in case you were wondering, here's my Twitter . I can't promise greatness matching any of these, but it exists.) HEIDI HEILIG Wow, I bet you never would have guessed that I'd include this one after reading the intro to my post! Anyway, her Twitter (like all of the ones here) is an awesome mixture of bookish goodness and activism, and following her was one of the best decisions I've made. (Although I'll admit that it also makes me think of my copy of THE GIRL FROM EVERYWHERE just sitting on my shelf, unread.) Also, her twitter icon has a cat in it, which just makes everyth...