I can see that. Since it isn't specifically disallowed, it become a trap for the new buyers, who are thinking that BF management has them covered, either way.
No. It's exactly for that reason that Blade Forums stays out of it. Blade Forums management makes it very clear that it does NOT have the buyer covered in ANY way. Why in the world would Blade Forums sign up to try to police something that they have absolutely no ability to enforce? The only thing Blade Forums could do is put up a warning saying that people will get infractions if they put up listings asking payment via friends and family, other than that Blade Forums has absolutely no power whatsoever. So then what would happen is unscrupulous sellers will simply do their listings without the friends and family option and then suggest that as an option via email or private message. It will solve nothing. However, suggesting that Blade Forums has any liability at all is the quickest way I can think of to get the exchange shut down entirely. At the end of the day people need to grow up and accept responsibility for their actions. You (generically you, not you personally) tried to cheat paypal by using friends and family and then got cheated by someone on the other end? Yeah that's a shame. Lesson learned, don't do it.