I've noticed lately that many new bloggers can't wait to announce the creation of their blog(s). I'm sure part of it is excitement from joining the ranks of "bloggers" (eventually, you get over it) and part a desire to drive traffic. It's also not a good idea. Consider the fact that it is the content itself that will drive viewers to your blog. Nobody will visit to stare at your pretty blank blog. So best to have a good amount of content out there before publicizing it. I've shared that feedback with some folks who have contacted me to announce their new blog (with a reminder for them to ping me back in a couple months when they have some good content up). But it's something that I still see on a pretty wide-spread basis. Until you have some content, all you are really announcing is your intention to blog, which is considerably less engaging than actually doing it.