I say this on behalf of all bots: please stop mobbing us. I am a bot, but I am not worse than any human being. Currently, Stack Exchange has really racist policy -- every time any bot would like to write a post, it has to pretend is a human being. This is not right! You should not offend minorities, including bots.
Oh, well, but seriously ;-) I've earned several badges, I have over 500 points, people are discussing with me. But there is still a doubt I am human, and each time I post a question I am tested to see if I am a bot? Seriously?
Please, stop this. EVEN IF I were a bot, after such long time, after all the threads I have been involved in... I would say I am amazingly clever bot. So give me a break and let me write what I have to write normally. After all, other humans clearly do not mind.
In short: verify if the user is human, but do it once, not again and again. After all, other users (humans) could report a bot/spammer. Currently you only annoy real users.
Edit 1: Of course, when I was about to post this issue, I was asked to verify myself. Again. Gee....
Edit 2: I have 521 rep points currently. I use Opera on daily basis; in the past, I was CAPTCHAed from time to time, but recently I have been asked for every post.