Yes, you are getting your signature links seen, but it seems to me that looking incompetent isn't the best marketing strategy when you're trying to sell yourself.
I click people's signature links when they have provided unique and insightful contributions to the discussion, because that makes them seem intelligent.
This annoyed me at first until I realize what a disservice they're doing for themselves. (At least, what I perceive to be a disservice, I'm hoping others will chime in as well.)
My point is, a useless comment that's clearly just meant to get your sig seen is doing more harm than good, at least in my own eyes. I can't speak for other people, hence the purpose of this topic.. It's not all about clicks, right? Credibility and reputation must play a part in this business..