How do I take advantage of Twitter?

I've been on Twitter for like 5 years now, but I only have 100 followers and basically treat it like an RSS feed with my own occasional mundane tweets. It's hard for me not to just view Twitter as the place to share things that are too dull (or too edgy) for Facebook, but clearly people are using it a ton so that can't be right.

This might be silly, but I like the idea of being a regular Twitter user and taking advantage of it. What is the best way to do this? What sorts of people do you follow? (This might be easier for people with more tech-savvy friends. I have very few friends who tweet, so there is no real incentive to share a ton.)