Twitter can make for interesting engagement, but it has a problematic ceiling. I use it to network a bit, make announcements, and engage in some semblance of community, but every few days you'll see some lunacy surface in the social media discourse that will frighten you away for a few days. I'm also dully fascinated by folks who use Twitter to conduct business to any meaningful degree. It's not a bad channel for establishing contact, but it feels like a terribly chancy venue for anything like commerce.