For the argument of people asking "What would the buyer want from it"
My idea answer would be why not have a column of awards on a users xatspace, The awards can vary from whatever Volunteers or Admins want to add, such as:
25 Gifts = Generous Gifter Badge
50 Gifts = Ultra Gifter Badge
100 Gifts = Rated Awesome Badge.
They could have some nice snazzy designs to them, a little like xaters had (Not stealing the idea from Paul) but this little additional asset could give the users something to look forward to on their profile or somewhere else on xat, in my opinion it'd look better on the xatspace.
On TheTechGame they also have this feature where you can gift a user the Gold Feature(s) on the Forum and after x Amount of Gifts, the gifter will then result in receiving a badge automatically.
It'd bring more money for Xat, and also something for user(s) to work towards.