More and more I am seeing people take advantage of Dropbox to add new functionality to the PC environment. The most recent I have signed up for is AirDropper. It lets you send someone a slink they can use to upload files to you directly into your Dropbox account.
I just sent my first request and am waiting for the person to send me files. Seems like a good way for people to be able to send me multiple and large files.
I haven't tried this one yet, but there is another email to Dropbox service, from Habilis. I've been using SendToDropbox.com that I first talked about in July.