Please... any proofs that this spam is of "Russian" origin?
The fake dating site had Russian girls. It could have been created by anyone, but I personally knew people in Russia who created such sites to defraud foreigners. Nigerians also do that, but they usually identities of western girls and guys (stealing idenity is easy, since people tell everything about themselves on social networks). That and carding are some of the reasons PayPal doesn't work in Nigeria and had been unavailable in Russia for a long time. I've lived in a hostel for some time with a fugitive from Nigeria, hiding in Eastern Europe. He did carding stealing US citizens identities, cashing out money in Ukraine. Reported him to local Interpol - they don't care.
So yeah, be careful - avoid suspicious sites, because browsers have 0day vulnerabilities, which allow stealing your passwords and card numbers.