Blogging + RSS is interesting. Blogging - RSS isn't as much, because you need to get people to come back over and over again. And there isn't a lot of consumer adoption for RSS. "Publishing" isn't enough any more because it assumes that distribution is built in, when it just isn't.
I made my blog -- http://nowiknow.com -- into an email newsletter for this very reason. Two+ years in I'm at 80,000 subscribers. It's doable.