[smtddr]

The moment we start maintaining a list of blacklisted/tainted/marked coins that are not accepted everywhere is when bitcoin will start failing. The list will start off innocent enough but when(not if) it starts being abused, it'll be all over. It'll start with blatant thefts like this, but the blacklist-maintainers, whoever they are, will eventually attract the attention of the law enforcement. The definition of theft will expand and expand. Eventually these blacklist-maintainers and/or GOV will decide which coins are valid are which are not. Coins will be seized just because of some random political agenda and bitcoin will just be a mess. The only way to stay off the blacklist will be to register with some authority and basically bitcoin will be no different from a regular bank. Then everyone will abandon it and go to Litecoin.

Seriously, the moment I hear about a blacklist of coins on bitcoin is the same day I buy $5,000USD of Litecoin. I'll be a millionaire within 8 months.