All I need to do is just send the file I want as an attachment to an email address that contains the phone number I want to send the fax to, and bob's a male sibling of one of your parents. I even get an email to tell me the job's done...
And it works with PDFs, so I can just use Acrobat to scan documents and make PDFs without any tedious use of text recognisers or imagage processing programs.
(One thing to note: it pays to remember whether you've run Adobe Speed Up or not before trying to make PDFs from a set of TIF files!)