Ok, so blog newbies learn the hard way, just like everything else. I kept getting spam comments and finally figured out how to keep that from happening. Of course, now I probably won't get any comments at all now, but that's better than spam.
The internet was founded on the Usenet, a collection of newsgroups on any subject you can imagine (alt.rec.sex.teletubbies.tinkywinky). You could research topics from the existing archived posts, or post a question and get responses from all over the world. It was great. Then the trolls arrived, and started clogging up the newsgroups with ads for porn sites and penis enlargement pills. Many newsgroups died because of that, others migrated to groups on portals such as Yahoo or Google, where access was more easily controlled.
Trolls are now trying to infect the blogosphere with their crap. If you happen to see any trolls, please kill them. Thank you.