Why on earth the spammers feel the need to post on our site (or ANY site ?) is quite beyond me.
I have spent my entire career trying to make computing and networks more efficent.
I consider spamming and other malicious web activity to be a form of digital terrorism, and if it were up to me, I'd simply exterminate all spammers and hackers and be done with them.
That sounds harsh, but you cannot imagine the numbers of hours/days/months that I have expended in the effort to remove and prevent spam.
ANYWAY, I have found a very successful anti-spam software component, one that is inexpensive, efficient, and has excellent technical support.
CleanTalk.org is run by the folks that developed and maintain the software plugin.
You simply subscribe, plug the software into your site, and then watch as the reports indicate how many sorthless spam comments were NOT left on your website.
It's a blessing and I am very thankful for the software, but also for the really excellent and timely technical support that is provided.
Plese feel free to ask me any questions about the software and our relationship with the developers.