Some people don't rest until they ruin everything.
Today, spammers have posted some 30 comments in my blog full of links to Viagra stuff. Of course, I removed them as soon as I could, but several of those comments were visible for a couple of hours.
Obviously, I don't want any spam in my weblog, but I don't want to remove the possibility to post comments either. Many people would install a “captcha” (one of these images with distorted characters you have to write in a text box to post a comment), but I hate them because they are hard to read for a human (and impossible for someone who cannot see well or at all) and easy to circumvent for a spammer.