Worth a try if you haven't yet, plenty of RPS'ers play so we should be able to organize an invite thread if anyone wants to give the game a go.
Quote from everyones favourite site, facebook:
Edit: link to game client http://cloudfront.guildwars2.com/client/Gw2.exeRefer a Friend Free Trial is Coming
We want you to experience Guild Wars 2 and Lost Shores with your friends, so on Monday November 12, we will turn on Refer a Friend Free Trial. You will be able to invite up to 3 Friends to play Guild Wars 2 with you for free from November 15-18.
To do so, you need a Guild Wars 2 account in good standing that was created before 23:59 PST (7:59 GMT) on November 6.
We will give you more details once the program goes live, but start thinking about who you want to invite!