File sharing/transfer services are thick on the vine at present. A recent contender (still in beta) is GE.TT. Just click one button, tell it where your files are and who you want to receive them, and it is off and running. Cleverly, the service allows the receiver to begin downloading the file even before it is done sending it from your machine -- potentially a big time saver when sending large files. Of course, DropBox does essentially the same thing, but GE.TT doesn't require you to set aside a designated folder on the sending and receiving ends.