Is rude.com really free or, are there some hidden fees?

Answer 1

IF...

You have to enter a (real) Credit Card number = it's not free they will charge you

You have to enter (real) Bank Details = it's not free they will charge you

You have to enter a (real) eMail address = it's not free, they will sell your eMail address to spam merchants and other adult sites

You have to enter your (real) name & address = it's not free, they will sell your address to other adult 'service' providers (and you may recieve unwanted material of an explicit nature in the post :-) )

HOWEVER if none of the above apply = you enter fake credit card, fake Bank details and fake emaill/name&address details then it's free :-)