K_1269: 1. How many games do people gift usually? (my giftee has no most wanted and only 2 games I know on his/her list, one very good, one not so much, so I'm a bit at a loss at what else to get him/her.)
It varies. Some people buy just the one, others buy a whole bunch. If it's on their wishlist, I'm pretty sure that anything you pick from it will be enjoyed by the giftee. :)
K_1269: 2. When should we send the email, if we buy one game, but later decide to buy another, would it be ok to send a second email, or should we wait 'till the last day to send the email ( asking because of the daily deals and possible changes to the wishlists)?
A second email at a later date is fine, as long as you include the name of the giftee in the message, so we know who it's for! Just send the gift whenever is convenient (but before the deadline of 23 December) - we'll do a bit of juggling if a giftee does buy something from their own wishlist that their gifter has also purchased for them.
We do have 6 people in the Special Cases category, who intend to buy gifts without getting anything in return (some of which are specific games that I already have codes for), and we'll fill any gaps that might open this way. :)