Using Skype to transfer files to and from a PC seems to be a really silly substitution for a good cable, but it is a good alternative to Bluetooth perhaps?

Have a Skype-certified mobile device but no appropriate USB cable handy? You might be able to transfer files to the device using Skype’s file transfer feature. Skype Blogs has a post about a reviewer who managed to transfer music files to a Sony Mylo media player and wireless Skype VoIP phone via file transfer. (Sony didn’t send him an USB cable.)
You can also use this feature to transfer files between two of your own computers. Really, that’s no different than if you were just sharing files with someone else. I work daily on both my laptop and desktop computers for overlapping purposes and have two different Skype accounts, and two different Google Talk and GMail accounts. (Google Talk recently got the file transfer feature.)

I suppose I could just as well use either of my wired or wireless networks and Windows Explorer for a file transfer, but this is easier because I don’t have to expose my directories to sharing, and then unshare them each time. My home network stays secure. BTW, here’s a link if you want a quick overview of various Skype features….. Source: VoIP Now