Might be a good idea to get your site on
spendabit (and any other merchant searches). While you're not actually the
only site selling most of these things for BTC, you could certainly get some publicity when people are looking for it.
the demand is blowing up
Calm down. This appears to be quite a minor company, judging by the fact that I've never heard of them before and they have quite an unprofessional looking site.
Actual usage of BTC at merchants is hard to measure, and I would find it hard to believe that it's going anywhere but down.