Earlier today, I set up a gmail account for an elderly acquaintance of mine. Due to his really forgetful nature, once I created his account, I logged into it and mailed myself the username and password. As soon as I clicked "send" however, I found that I had been logged out of gmail. Trying to log back in proved futile as I was met with a "This account has been suspended" message!
I came across Google's image labeller just now and quite enjoyed myself playing the internet version of charades with some other anonymous chap halfway across the world.
I wonder if the chap behind it got the idea from the ReCAPTCHA project. Neat stuff.