journey11
Garden Master
Let me suggest Yahoo News then. Create a user account, read the headlines and opine to your heart's content in the comments section. It is a real free-for-all. People can vote your comments up or down and if you say something particularly stupid, the auto-moderator will conceal your comment from others while still allowing people who love to argue to view it at their discretion and flame on.
http://news.yahoo.com/
http://news.yahoo.com/