I’ve noticed a lack of comments about a lot of things lately, but I just found this item from Wishful Thinking:
Why would you use a trackback instead of a comment? One big advantage is that readers of your blog can also see the post. And sometimes trackbacks are a good idea when you have a lot to say and don’t want to take up a lot of space on someone else’s comments section. If you want to see trackbacks in action, have a look at at this typical post from Seth Godin’s blog – Seth only allows trackbacks instead of comments because he says he prefers the greater accountability that comes from people airing their views on their own webspace.
I should think that limiting readers to trackbacks would lower the amount of feedback considerably. Of course, there are times and topics where that would be nice, but so much more effort is also involved in a trackback over a comment. What say you?