To Quote:

"Rich Presence is a way for your game to display on Xbox LIVE while it’s being played. For each SignedInGamer playing your game, set Presence.PresenceMode and, if needed, PresenceValue, based on what a gamer is doing in your game at any particular moment. Xbox LIVE Indie Games adds your game title automatically, so everyone knows people are having fun in your game."
Would it be possible to add this into the XNA extension or gamerservices extension? I think this could be a subtle but efficient marketing tool for Indie Games.

Just a thought.