When I first joined Physics Forums, the first thing I did was post a message in the "Introduce Yourself" section, where I included a link to my website. When I next visited the site, not only was the message removed, but I was completely banned from the entire website. I had to literally join again using one of my other email addresses. The only reason you gave for banning me was the word "spam". What spam? "Spam" is where a con artist sends unsolicited emails to unsuspecting people to try to lure them into a bogus get-rich-quick scheme or pyramid scheme. I can't imagine why someone would falsely accuse me of doing something like that. My only guess is that this had something to do with the fact that I posted a link to my website. So I concluded that if someomne makes the innocent mistake of posting a link to their website that they are, without warning, permanently banned from Physics Forums. Wow! You must really not want people to post links to their websites! Then, just now, when logging on, I was confronted with the following invitation. "PF thrives by your sharing of our community with your friends , family and colleagues. If you have a website or blog, please feel free to add a link to Physics Forums. If you do, tell me and I'll give you Gold Membership." What gives? Is this some sort of trick to get people to make the mistake of posting links to websites so you can ban them from Physics Forums?