It has been tried before. Rombeggaz don't usually care where they post - and who else will visit a begging board in the first place? Most romz can be easily found using a bog-standard search engine. Even better, pay some money and get a decent usenet access.
Why should we make it easy for people to steal? They should learn it themselves like most of us did. I never asked for a rom on a message board and found everything I needed reading bulletin boards, using search engines and checking usenet newsgroups. If a romz request is sensible and polite, it will usually be answered, either by myself or others.