Radio Possibility is what I was asking for in a weblog service from Userland Software when they were flogging their Weblogging software. They provide free sites at several domains, and I got my start at Terebi I. But since it was free, the service was whatever bandwidth they could spare, and it got frustratingly slow. I begged Dave Winer to charge me money so the service could be upgraded, but no go. He didn't want to be an ISP, and I can respect that.
So now Marek is taking the step that I wanted months ago. Such a shame that I migrated all my writing to this site already. If this site (based at Agora) ever goes down, perhaps I'll look into Radio Possibility again.