Read some of the other posts in the general forum and that will give you the answers as to why that person was banned. Also, you can read the TOS to let you know what the rules are. I see you are new here and I'm sure you will find that this site is a wonderful source of information with "mostly" a great group of people. The Moderators are in charge of banning people and keeping this site running without any problems and they are doing a great job. Welcome to a great site......
Bringing color to your collection.....