I haven't done much blog commenting...definitely never want to blog spam. but as part of marketing would be interested in maybe adding 10 blog comments/day to my daily marketing. What % of blogs do you think allow URLs? I already saw the discussion on the no-follow tag, but don't a lot of blogs disallow links due to link spam or am I incorrect on this? I guess some probably just use approval mechanism which shouldn't be too much of a problem if I leave quality comments.
Quite a few of them do allow you to leave your name with your site, and display them. To state the exact number in percentage terms would be too difficult IMO. As long as you do post a quality comment,there is no reason why your comments would be disallowed. But, in the beginning, avoid posting links to your site in your comment. Not an excellent way to start. With time, you could do that
I have two blog projects in mind (never made a blog yet, but it's time to step into 2007); I'd imagine that allowing comments is just one huge thing that you'd have to babysit every day.
Good day, I think it would depend on the types of comments left and the mood of the blog owner. I always feel feedback both good and - is valuable unless it is meant in a hurtful way than this is not productive.