[tst]

Reminds me of the infamous Rapidshare Captcha with cats. [1] There were hard to solve. However, also for humans.

[1]: http://www.labnol.org/internet/favorites/cats-inside-rapidsh...

[soult]

> However, also for humans.

Which is exactly why they added those. Premium accounts do not require the user to enter a captcha for every download. So every user who was annoyed by the "cats captcha" was a potential customer.