Die comment spammers!

Add a niffy new plug-in to the blog today, namely an additonal field which requires people to enter a security code (from a randomly generated graphic) in order to successfully post a comment. Something any average net surfer can do, but not spam-bots. Though I personally hate filling out such unnecessary code-like-thingys even before I could get anything posted, this is one of the best anti-spam options available against the hundreds of comment spam I get a week. Come to think about it, spam comprises of 60% of the internet traffic, a great waste of bandwidth, not to mention money both adding to inefficiency & not to mention annoyances. What is the use of spam? what do people get to gain out of hundreds of viagra, poker or mortgage ads? dang it!