I just purchased the Humble Bundle to get my hands on a PC copy of Darksiders and Red Faction, sadly CoH and Metro and bundled in with those so I can't share those spare keys...however...
Saints Row 3 is a totally separate key! So I'll start the duder ball rolling and share my spare, post when you've claimed so people know (I'll make an edit to my post when mine has been used).
Hopefully theres some other people out there feeling charitable, share the love guys.
Steam key btw, but who doesnt have Steam right?
@believer258: You're welcome duder!