This is something that we have been working on and looking into.

However, rather than using gift cards for hosting only, we've seen a bit more value in using Visa gift cards, with our company logo/url on it. They can be used anywhere Visa is accepted.

This encompasses the idea that if they get the card from us, there is a good chance they'll also use it with us. If they don't....no worries, as our company name is in front of them the entire time.