Instead of setting up a new blog, maybe you could get people together and write a weekly "column" on Perlbuzz instead? That way, you don't have to force yourself to have a good story up every few days, Perlbuzz gets more content and becomes more of a 'daily' magazine, and I have something to read while waiting for my code to upload onto our server.
Of course, petdance might be the first person to disagree with me on that: he wrote a lovely article a few months ago on how diversifying the community is a good move. So maybe a new site, completely different from anything that's been tried before, might be a better way to go?
Either way, I'm not much of a writer, but I'll help out with editing/ad-hoc tasks if you point me to a mailing list I can sign up to. And when you have a site up, do announce it on PM/PB!