I use it in two ways.
One is to get my paintings and soaps out to a wider audience, though I keep the spam pretty light. A new painting or various other creation once a week at most.
The other half is to connect with people. You have to put a bit of work upfront and give it about a month but before too long you're connecting with people who share your same interests, keeping up on the very cutting news, and getting a slight thrill when some celeb or other person you admire replying or retweeting you.
I'm actually going to be meeting some twitter friends I just made this next weekend and I'm really excited.
Yeah, it can be a good way to make friends, for sure. I'm probably having a board game night on Monday with a few people I know predominantly through Twitter.
I think a lot of people simply don't understand how most people actually use Twitter. We're not just randomly letting the world know what we're having for dinner (though if I cook something good, I will engage in food porn occasionally), but rather we're making connections and having conversations. That's what it's about, in a nutshell. It's really a remarkable tool.