I tried to create an account on "http://civland.org/greatturn/" but I always got
The e-mail you inserted contains unsupported characters.
as my email address. (samplename only contains [a-z]).
[*] Win 8 -> german
[*] Firefox 25.0.1
my firefox tried the following registration link
So I registered with changing %40 to @ but other may get the same problem.
BTW: I tried it with IE too. It gets the email part right but it never accepts the captcha (Yahoo!).
So just my 2 cents
Nah, it doesn't work this way, it says "You have succesfully registered!" but on login I got "The nick you entered doesn't exist in database!"