I suspect it was my own doing. I hate giving out personal info so that they can spam me. I made up a new screen name and entered a fictitious birth date that may have made me seem like an underage person. However, once I did that it obviously placed a cookie that told it not to register me without a credit card. I went and deleted the cookies for Yahoo, but decided it wasn't worth it anyway, given that I found out the FR info and how to reset my hosts file. I have no doubt that if I or anyone else wanted to visit an "adult" group, they would require it also.
Oh, I see.Well, you can always save the FR Yahoo! Group link to your Favorites/Bookmark or whatever and if you have a problem, then you can at least check and read the posts there to find out what's going on, get updates, etc.