If the FDA issues a deeming regulation, and that regulation goes into effect, then they might have an excuse to lump e-cigs in with tobacco products.
Hmmm...Maybe Authorize.net has information that we don't (yet).
As for Dwolla, they charge vendors 25 cents per transaction over $10 (under $10 is free). There are web plugins available for several major e-commerce platforms and they cost between $50-$100, a cost that can be recouped after just a few transactions when compared to 3%+ per transaction that credit card processors charge. It is an awesome deal for vendors.
Dwolla's drawback, however is on the consumer side. Unless you have enough money already in your account, you have to wait 1-3 days for the money to become available. While it's easier than sending a check, it can be quite annoying. Dwolla's Instant program, which fronts the user up to $500 for purchases, is unfortunately closed to new users at the moment. Until Instant is available to everyone, Dwolla, I think, will remain severely hobbled as a service.