The strict criteria of a trading room which I'm sure most don't meet
I don't really think it has to be that strict. Obviously in an ideal world, it would have a voice function etc. But i've been in trading rooms without that and was still able to theoretically get the same price as the person calling the trade using text.
Hell, lots of people are brave enough to post real time trades on this forum. Lots of guys in the ESjournal, and I even noticed an 'apprentice' posting his NQ trades live in his journal.
Obviously one can try to play tricks and delete posts and edit things to give the impression of a better performance, but it really is easily spotted if one posts a decent number of trades.
Nobody is under any obligation to make actual/clear 'calls' at someones request, but it's the only way to see whether someone is actually able to do what they claim to be able to do (as of course anyone can mark up nice, annotated charts at the end of the day)
