Do you want to demo Red Orchestra 2 for 3 days?

So whilst there's another day or so left of the Red Orchestra 2 special does anyone want to try before they buy and use one of the 3-day guest-passes I stupidly got given when I bought the game (3 available)?

Seems kinda silly to let them go to waste so I hope simply giving them away like this isn't breaking any rules, at least not harshly enough for a first time offense to carry serious punishment.
And I haven't seen an official thread for this sort of thing nor can one really search this forum.