Starting this Friday, Guild Wars 2 will be available to play absolutely free through the following week (ending midnight, October 3rd). To coincide with this, ArenaNet will be discounting the Digital Heroic Edition by ten buckaroos - down to $39.99/€31.99 - during the same period. It's also a great opportunity to check out the game's living world, with the Twilight Assault update going live on the 1st.
You can register for the trial here (if you have an existing GW2 trial account, it should also work). To ask questions or coordinate a get-together with other duders, feel free to post a comment on the Lincoln Force guild thread or message one of the officers in-game.