Will Let's Play's of XBC Boost XBC:X's and XBC 3DS Sales?

[Iyasu]

I don't know. I recently bought Shin Megami Tensei IV after watching the beginning of a lets play, just to get a better picture of how the game plays (I'm loving it so far :) )

So I guess it depends if the people stop watching the game because they want to play it themselves, or if they just want to soak in the story and don't buy the game.
We'd need statistics to say if there are more people who buy a game after watching a lets play, or more people who don't buy it because they've seen it all in a lets play.