I don't mean it coldly at all.. It's part of the whole idea of a monkeysphere- I want to help my friends because I like them, and we are close. When a blog writer launches a site, like Stack Overflow it is a step away from that- They're people I know, at least through their writing, but aren't friends with directly.
Hacker News is one step further- They're people I'm aware of, I read their comments, and I like their work for the most part. I want to help them collectively, even If I don't know the person individually.
Launchly.. Is just a bunch of folk. I don't really know them, so I don't have any reason to help write reviews for them.
It like Babysitting- I would be happy to watch my nephew for a few hours, but I'm not going to volunteer my time to a daycare.
Maybe not requiring local launchly accounts (by using Disqus for comments) is actually going to work against me on the community building side of things?
I've remained a member of the community primarily because I enjoy the discussion. While I can find the links anywhere, I really enjoy discussing and debating issues in an intelligent and civilized manner, while learning what's interesting to my peers.