[mellavora]

I recall one study where the researchers (with approval) made google maps suggest a route which looped back on itself... the idea was to test if people would blindly follow google maps or if they would try to reason for themselves using GM as one source of info.

turns out many people just blindly followed.

So closing/blacklisting accounts might not be the best solution, you could just make all the route instructions take them back to Russia.