The poor RMT's...

[ReplicaX]

Please, quote any case in which any person has been sued or placed in jail for buying or selling virtual currency.

Virtual currency and virtual currency platforms can be protected by trademark, copyright, and patent. In fact it's even patented in the US: U.S. patent No. 7,076,445.

Zynga has actively taken ppl to court over it. Do the rest of the research yourself since you are so interested.