If you're like me, it's always a hassle to figure out how to get someone a large file. Email isn't a good way to send fifty megabyte PowerPoint file. Dropload.com is a free service that allows you to upload up to a one hundred megabyte file and then allow authorized people to download it from their site. They erase the files after four days.
This is not a place to drop confidential files, but for normal use, it sounds like it might do the trick.