Looks like my comment spam fix isn’t foolproof, since I have just got some pharmaceutical spam posted to one entry. But a quick analysis of my Apache server log revealed some interesting trends…
The IP address was 184.108.40.206, so I searched the file for this address. 5 lines came up, the first of which was most telling:
220.127.116.11 - - [08/Oct/2003:17:30:19 +0000] "GET /entries/000234.html HTTP/1.1" 200 - "http://www.alltheweb.com/search?_sb_lang=pref&cs=utf-8
&cat=web&q=%22Remember+personal+info%3F%22&avkw=fogg&o=20" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Q312461; Rogers Hi-Speed Internet)"
This shows that someone is scouring for sites with this string: “Remember Personal Info?” – many of which will be blogs. It would seem, therefore, that you could prevent this by merely changing the text to something else (ie something that not everyone else is using). It’s worth a try, anyway but don’t expect immediate results because the search engines will need to recrawl your site first.
While I’m on the subject, – might be worth keeping an eye on it.