Blog Spam?

I'm now getting spam in my blog comments. I take a fairly purist stance on my blog comments -- I don't alter them or delete them. I figure if you care enough to send your very best, who am I to edit it? But, I think spam crosses the line. Like an insect infestation you just can't get rid of, spam seeps into every nook and cranny of my web experience. I don't think its fair to subject my few web log readers to spam comments, so snip snip, they're gone.