I emailed about 30 guys at work who I thought might be interested, and 5 bought the game within a few minutes. I had already contacted several friends at work who had already bought the game. You can easily do the same. Don't be shy, it's just an email about an awesome computer game, nobody's going to mind. Make sure you link directly to the Youtube video so they can easily watch it. It's the most convincing way to get someone to buy the game. We need this documentary, we can get about $175,000 in 22 more hours if we all help out.
Hehe i beaten that. ~100 ppl sounds ok? xd EDIT: thats not counting the fact i made a post at the minecraft forums and some more on forums for mods for minecraft. Should bring in even more ppl.