I follow the people whose opinions I agree with, those I find funny, those who I've had long conversations with, those who I admire and a few random folks who don't fit into any of the above categories. ^Copied and pasted from my profile.
I follow leaders. I follow people I disagree with because you can always learn from debates and arguments. I cannot stand people who agree with me. It's so tedious to communicate with people who holds my own views.
I follow people who change my mind about things, and add to what I already know, and people who are kind in difficult circumstances, and funny people, and people who correct me gently and clearly when I'm wrong, and people who are completely different from me, and the ones who are richly sarcastic in just the right way at just the right moment.
I follow people who are funny. I only followed a few of the people I am now, the rest of em followed me and I followed em back. If I wanted to look impressive I'd just not follow half of em. :). If anyone here is funny give me a heads up ;)