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How much is the dollar/ruble these days? Did they accept dollar/euros as well?

Here's a crash course on how to call up and meet with pros in moscow.

Includes a free bonus course on how not to spot a surveillance cam while you're there.
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Just browsed rusdosug.com and got curious why so many of the girls there are black? A year or two ago I think 5-10 black girls was on that web site, now it's more like a few hundred.

Is it just...

It doesn't have to be your own business, seems any business can invite you. A number of web sites even sell the invitations just like the tourist invitations, so no problem.

Probably yes, but a business visa is max 90 and just as easy to get as a tourist visa, just costs $50 more or so.

This is a bit off topic. I'm looking for a way to stay in Moscow for more than the 90 out of 180 days currently allowed. I hope / plan to stay for 2+ years but the rules seem impossible at the...