I'm usually pretty generous with Facebook login and I find the paranoia surrounding it ridiculous, but when your site posted directly to my wall THE MOMENT I SIGNED UP without any kind of notice, I was fucking incensed. Not only was it unsolicited, it was spam that offered no compelling content except a link to your site. It doesn't help that you have no option for turning this permission off.
Out of hundreds of facebook logins, Joday.com was the first site I manually removed from my account.
F- not visiting again.