Alcurex is fine, indeed a large exchange is better but YAC don't have great volume in last year, and now with Bter issue is almost no exchange for YAC. (initially MRC was scrypt jane)
Surely a working exchange with low exchange is better than one folks don't trust? I am reluctant to send coins to BTER at the moment due to perceived issues etc...
Cheers,
Roister01