Suggestion for efficient advertisement

I had to go out of my way to find this MMORPG, and it's the only one that's held my attention over the decade. I've played numerous games (Tera, WoW, d3, sc2, a bunch of f2p rpgs, gw2, etc etc) and this is by far the best (so far).

I have a suggestion for a very cheap form of advertisement:

Find gamers on twitch.tv (a streaming website for those that don't know), who have over 20,000 viewers on average and give them a free copy of the game (which includes 1 month of game time).

For example, no_life kripparian is currently playing hearthstone 10+ hours a day, where over 20,000 people on average watch him play a simple card game. He's looking to switch to a new game very soon.

By giving one person $15 worth of game-time, we could potentially advertise to over 20,000 people 8+ hours a day. I feel like this is an extremely efficient way of advertising, and should be looked into.

thanks, and I hope this game grows.