Are you a human

This is one of the cool captchas I have ever seen.
http://areyouahuman.com/
http://areyouahuman.com/demo/
It is said that One in four people leaves the site when confronted with a Captcha because it annoys the user.
Also researches says that 1 in 5 captchas could be solved by Bot.
Note: This is a non flash captcha.
Also this captcha is interesting for the users, as it provides the user with a game.
http://areyouahuman.com/
http://areyouahuman.com/demo/
It is said that One in four people leaves the site when confronted with a Captcha because it annoys the user.
Also researches says that 1 in 5 captchas could be solved by Bot.
Note: This is a non flash captcha.
Also this captcha is interesting for the users, as it provides the user with a game.