No, I don't think they are related.
2 different people.
GOOGLE Search Term: "princebinladen"
http://www.google.com/search?hl=en&ie=UTF-8&q=%22princebinladen%22&btnG=Google+Search
See post no. 2294 where stillproud2befree posts a message from princebinladen
http://www.freerepublic.com/focus/f-news/1151344/posts?page=2294