If you consider a game being good by the fact it was purchased by many people and this is the only factor that make a good game you should then be a very social person if you want people to do you a favour and buy it... If you are agressive as me you might end up like how I did when I angered many people promoting my games... For a private developer it is very hard to sell something without social skills... As the monster I am, people can see me as a bully or as a joke when I suggest my games as a purchase. Even if I promise to use the earning to destroy the human race and use 20% of the earnings to support the victims of the war I declared on the human kind! :-)