Yep -- anytime you publish or do something new you'd like people to see, Twitter is a great way to get the word out. I recently posted to my Twitter (120 followers) that I'd launched this new blog. At the time that I posted it, I'd had eight visitors so far that day (hey, the blog's only like four days old. Give it time!)
My Tweet about my blog brought 20 more readers within hours. Pretty small numbers, I know, but every little bit helps, right? The same post on Facebook brought only four readers.
Here's a screenshot of my traffic report for the few hours after I Tweeted about my blog. Each one of those "Twitter" lines reflects a different person following the link from my Twitter feed to check out the blog:
Check this earlier post to learn how to add this cool & free traffic tracker to your blog.