I saw this button at the Muddy Boot Dreams and could not believe my eyes at first - someone made a button and started a movement! Brilliant! I do love to read interesting blogs, and love to comment, and I hate it when I have to fight with this word verification Cerberus. As a rule, I do not leave meaningless comments for the sake of establishing my presence; I usually try to make them informative and share something, and it often takes me a while to write a comment. After spending more that 30 seconds on writing the comment, the necessity of deciphering the tangled symbols can be quite irritating. I try once, twice, and then leave - often to never be back.
You can read more on the topic and grab the button here.