Should my nickname have specific characteristics?

The nickname is your virtual name that you'll need to access to your account and be recognizable by all the members in Lovepedia. Choose it carefully because you can't change it after registration. It should contain from 4 up to 30 characters: only letters, numbers, hyphen and underscore; the first character must be a letter or a number. Remember that vulgar nicknames are not accepted and that nicknames containing personal data may not be accepted.

Didn't you find what you were looking for?