I don’t think that’s an unreasonable position – after all, it’s just a comment. Every other blog does perfectly well by just taking your name and email/url.
So why does Performancing (who are “Helping Bloggers Succeed” btw) require me to sign up or f*** off? Maybe they should change their slogan to “Making Bloggers Suck Seed“?
As it happens, I wanted to post to the Performancing Firefox extension roadmap. (are you seeing this over @ Flock? You guys desperately need to get a roadmap for yourselves. Ask FactoryJoe for my thoughts on this.)
I was going to suggest that they add a spell checking facility to Performancing (I’m dyslexic, and as readers of my blog, you know how bad my spelling is!). But it looks like I should also add “unregistered blog commenting” too.