Types of Blog Spam
Saturday, November 15th, 20081. Basic comment spam. The spammer leaves a short uneventful message in a comment field in one of your entries. The spam comes from the URL placed in the comments URL field. These URLs link back to every conceivable scam.
2. Comment spam flooding. The spammer uses an automated computer bot to flood your blog with comment spam messages, up to hundreds in an hour. The spammer doesn’t necessarily leave a URL, but can leave garbage messages, almost like a graffiti artist. The comment spam can put a severe load on the server hosting your blog software to the point that it crashes.
3. Trackback Spam. Spammers have discovered how to take advantage of Trackback. TrackBack spam is very similar to comment spam. The spammer sends TrackBack pings to your site that direct viewers to a totally unrelated URL.
4. Referral spam. The spammer links to your site from their site, and then pings your site through their link, thus creating a reference and link to their site on the statistics referral log of your website. When you are reviewing your stats and see the reference to an odd site (ex. Paris Hilton), clicking on the link takes you to their site. Many people list “referrals” on their site publicly, so by spamming referral logs, not only does the spammer get a link on your referral log (which is picked up by Google) but may even get a link on your main page.