I always tell them to please read my profile before asking questions. and if its a site where you can see if they have money or not in their account and they don't and talk about private shows or requests i say, you do realize i can see if you are a paying member or no freebies. and if they keep begging or asking i say begging = banning you. sometimes they keep going then i ban but usually they change the subject and aren't so demanding. But it really depends on the site and what you feel is an appropriate way to respond. I try to give most of the free guys a chance because they could always change into paying customers but some are awful.
