Regarding the above website:
A) Have you used it before?
B) If so, is it worth my time?
C) If so, are there any similar websites that you know?

A) no
B) N/A
C) syntax error
You'll notice that since B wasn't run, the "if so" of C cannot be checked. The correct way would be either to indent the C (or brace it) so it fits within B, or to change C to "if A and B:"

I have tried to make an account at least 20 times. The captchas are stupid.

It is unbelievably fun and stupid.

It should be called "crack this site", not "hack this site".

A) Yes, I've used it.
B) No. It sucks. It's great for beginners because there are many youtube videos and wikis with the answers to most of the problems, but if you're an advanced hacker, that site would totally not be worth your time. I don't think the forums work well; there's no way for you to communicate with your fellow members.
C) HBH (hellboundhackers.org) OK site, but it's going up for auction in the meantime.
EG (enigmagroup.org) The best I've been on so far... I'd totally recommend this site.

Thank you. That was an extremely helpful post.
*discreet cough* everyone please be more like this person.

:(

Awesomeguy receives an exception because he is awesome.
Also, irony:
Enigmagroup has a mission section on bypassing captchas :P

I once recieved a captcha which literally had Chinese characters in it.

Haha wow.