Haven't tested it yet, but looks like a nice fax offering. I very rarely use fax, just occasionally for signing docs. Currently use eFax but it's lacking functionality on Mac versus Windows. So I'll give this a try.
Fax machines are so 2001, but sometimes you just can't get away without having one. Hellofax brings the facsimile to the year 2011 with an online solution that removes a ton of the headache, and all of the hardware.