I just came across a cool site called Shazzas Knits from a fellow Aussie who's into knitting. I used to knit all the time while I watched TV but get very little done these days because here I sit instead. Shazza has a bitch about the comments on her site and it reminded me I have the same problem.
So far all I have done is delete them when they come up for approval. I'm hoping I don't have to follow Shazza's lead and disallow anonymous commenters. I have the Spam Lookup plugin from Movable Type and it seems to be doing a good job of keeping out most of the wankers. I tried once to add the number pictures to comments but couldn't get it to work, if I get too many more advertisers I may have to try that one again.

Yes I had a huge rant that day, thanks for the comments maybe if we all start reacting the spammers might get the message WE ARE NOT INTERESTED!! Have a great day, Sharon.