When asked about Twitter, a few people would raise an eye-brow: “Why would anyone be interested in ‘following’ me? Who would care when I got up and what did I have for breakfast?” Well, unless you are Guy Kawasaki, probably no one.
However, if you have a blog, Twitter is a must for you. Here’s why:
Instant updates. Compare offering RSS updates to your readers vs. Twitter updates. The latter is almost instant. On the other hand, sometimes it takes a few hours for RSS update to propagate to all your readers. Don’t abandon RSS, just add Twitter.