This Sharp BroadbandFax isn't as cool as I thought it would be on first look. Sure, it plugs into your phone line and your ethernet cable to receiver faxes directly into email. And sure, you can use it to "fax" something to someone who doesn't have a landline or fax-machine by faxing directly to their email. But it doesn't enable you to receive faxes from the internet without a land-line from people with regular fax machines.
You could achieve a similar result with a regular scanner and an account on efax.com, but this makes the process easier for those who aren't as computer savvy and quick with email. Available later in August for $159.99.