If you're a pastafarian who can use an online forum, then you've probably heard of World of Warcraft.
I have been a preacher in the Trade Channel since 2007. Every once in awhile when I'm really bored in WoW, I'll go into the main city and preach about FSM.
The World of Warcraft Trade Channel can be seen from all players in all cities. (It's named "trade" and not "world" chat because people would trade in the world chat anyway. So the Trade Channel is actually bigger than the World Channel. Go figure.)
The Trade Channel is one of the best ways to spread the word because it's a pool of public people who are 1337 enough to own a computer and can read!
In fact ALOT of people read trade channel intently as to not miss good trades or out of sheer boredom while idely sitting in a city.
So if you're a pastafarian and play WoW, I suggest you try alittle preaching in Trade Channel. Hint: It's fun but don't be a jerk about it or talk too much.
I'm a Mage so I advertise free portals in the name of the FSM, and maybe tag a one-liner fact from the gospel. Mad people whisper me asking moar too!
I suggest that you advise players to search up FSM in the google, if they have access to the internets.