I can see this being an issue if the users had to construct the multisig address themselves. Why don't people use Bitrated though? Do people not trust that it's constructing the 2 of 3 correctly? Or is it still too complicated? Or do people just trust the arbitrators on bitcointalk so much that they don't see the value in having even more security?
I have never heared about bitrated, so i don't really know how they work... But trusting a thirth party to generate a 2/3 multisig wallet seems unsecure to me... What if bitrated records all keys? Every party would think they're secure, but bitrated would still be able to run away with all the funds... Unless the keys are generated 100% client side, but like i said: i don't know bitrated...