This is great. I have a fax/printer/scanner at home for this purpose, but I am lucky if I send 5 faxes a year. Plus, if I ever drop the landline, it won't work. I really like the idea of paying per fax. None of the subscription services make sense for a casual user. Good luck HelloFax.
If the casual user has to ever receive a fax, then I don't see how to get around a subscription, after all, you have to have your own fax number to receive a fax, right? There isn't some technology by which users could share a number and use an extensions as a discriminator, right?
