I just had a little giggle. I posted a comment and had one of those blasted "Type in all of these letters/numbers that are so freaking close together that you really can't figure it out and will need to try 7 or 8 times before we accept your pitiful response" verifications.
I thought this explanation was hysterical:
This test is used to prevent automated robots from posting comments.
Poor robots! No comments for you. No one cares what you think about our human problems. Robots get no voice in the Blogosphere.
You can protect our stupid kids from harm (over and over again) and you can do our housecleaning, but you cannot, under any circumstances, comment on our blogs.
Unless, of course, you can figure out those damn strings of letters/numbers. I sure as hell can't. If you can beat us at chess, then you can probably repeat letters/numbers.