Spam, Spam, Spamity, Spam (Opinion, ie. rant)

Jeese.  I've been talking to my other blogging friends, a few who have just started up their blogs, some who have been doing it for a while. The discussion centered on how to avoid getting their blogs bombarded with spammers who want you to click on their link.  I just don't
get it.Are they porn sites? What is the point of them hitting a blog with that much effort? I know one reason is to drive up a blog's ranking on Google. But if it is also because they want you to go to their porn sites, I think that is kind of a waste of time, since I am sure these sites get plenty of traffic without anyone trying to drive more people there.  Come now. Enough is enough. Just saying.