How much users have cryptsy and bter?
I think its impossible to get a number without the owners commenting on it.
However, I think Cryptsy currently has more number of members than BTER.
Its funny how Cryptsy may be the leading one after so many errors with their service. I once had my coins dissapear for an entire day. It was nerve breacking, almost had a heart attack. Ridiculous shit.
Poloniex is much more solid in my book.