What better place can there be to discuss about the bitcoin(cryptocurrencies)other than this very forum,this forum offers you what you need when trading,be it trading advice,escrow services etc.
Creating a separate discussions arena other than this is superfluous to me and whosoever joins up does so at his or her own risk
I agree that Bitcoin Talk is a great place to discuss crypto, but it is a public forum. This can mean that by the time an investment group has decided on a purchase, many of the readers will have pumped the price. I believe that it is better to have a private discussion room off site, and report on purchases and trades here after you have made them. This was my thinking when I started the Crypto Coin Tree.