I suppose it's a result of the fact that we've been spoiled, but I was actually thinking about this the other day. Suppose I wanted to MANUALLY submit a comment with a backlink in it to a blog. I have no idea how to do so. I only know how to plug in the necessary data to various bots that do it. Thus, I've always used different bots to do it for me. How would one go about submitting a backlinked comment on a blog, for example?