Blog: Comment Spam
With some regret, I have turned on Blogger's "Word Verification" feature for comments. I've had to do this because of the recent increase in the amount of comment spam I've been getting. It wasn't so bad when it was just an occasional rogue comment on the most recent post, but the last time I made a small update, a script seized the day and made two comment posts deep in the archives. This is truly obnoxious, and it took me a while to find and delete them.
Verification is done by means of a captcha. This means that in order to leave a comment, you'll need to look at a distorted graphic of a short nonsense word and then type that word into a verification field. You've probably done something similar when registering for certain internet services.
Apologies for the extra (albiet slight) hassle.