I find it interesting that people often hold up this community as one of the friendliest and nicest, when every time someone who is well known plays the game these threads appear with people getting angry that new players will be coming. So at this point I would say that no, this community is not going to go downhill because of new players joining the game after seeing the game on yogscast or nerd^3 or whatever, the community will go downhill because of these people who think they are better than new players just because they have been here longer and don't want anyone else to enjoy this great game.