The similarity is striking: Nobel donated his prizes to combat his bad conscious about the horrible "side effects" of his invention, the dynamite. I would not be surprised if Millner has a similar motivation. If so, he should be open about it up front (like Nobel was).
150k for struggling startups - Horay!
On the other hand he is a close business associate of Alisher Usmanov, who's commonly considered to be, basically, the mafia boss of modern Russia.
http://en.wikipedia.org/wiki/Alisher_Usmanov