@RS,
How many threads on this topic do we need?

Edit: Wasn't this the "most secure" online exchange ever?

Unfortunately there isn't much one can do to force users to use a unique username and password at mcxNOW. It is security 101 but some users fail to do it.
And we come back to the point that your exchange isn't the most secure given that simple fact.
Without offering any kind of position on how scam/trustworthy TheRealSolid is, I fail to see how, if my password is "password" across all of my services, and for that matter my username is "gramma", how that is MCX's failing when someone figures it out and uses it to get into it, and B of A, and Mt Gox, and and and...
Indeed and thanks to my security system at mcxNOW the people who have the same username but a different password at mcxNOW can help identify the origin of the 3rd party service which has been leaked. Hopefully we can find out soon and warn users of that site(s).