I think you can send it to an alt email address and it'll have a link to the gift... Think you can just paste that link to people.When you buy a gift copy, it just sits in your inventory and has to be transferred via email or friend list right? You don't get a key that you can post and imply is something else, right?
"Oh, sure, here's a copy of Xcom, enjoy!"
BAM, you have Bad Rats.