Others I've come across:
http://jumpshare.com/
There is no limit on the number of files you can share but the total size of all files uploaded should not exceed 2GB.
The maximum file size you can upload is 100MB. There are no restrictions on the number of files you can share as long as their size does not collectively exceed 2GB.
All files are kept for 14 days (2 weeks) after which they are automatically deleted.
Once user accounts are live, files in your account will not be deleted unless you remove them yourself.
http://dropcanvas.com/
Currently we're offering an unlimited amount of storage, with a limit of 5GB per canvas. This is subject to change in the future, but we'll always be generous.
Anonymous uploads will last a minimum of 60 days, depending on the popularity of the Canvas. Registered users Canvases never expire.