I intended to add a Password recovery feature to the site, altho this is not implemented yet, so at this moment the registered email address is just stored in the database.
You could use a temporary as said above, or just type in something random as
123@456.qwe as the function that checks email adresses aint that complex.
Passwords stored are encrypted with
Salted MD5 and
SHA-1, wich both are nearly impossible to decrypt.
My password used on the site is stored as 42c41757029b00ea149be13ba13270d8, good luck cracking it.
The site itself is a self-learning project I have in my spare time, to get a better knowledge of Website programming (PHP, SQL, CC in this case).
I also have a site running that uses Javascript & RegEx to check email headers wether is a mail from Blizzard or a fake.
It needs a lot more work, but you can take a look at it
here.