G2G Share - service allowing to use your GMail account for file sharing. The general idea is that you open your account data for the service and then people may download files from your GMail account without having your login data.
Two more interesting services allowing to upload files to your GMail as if it was flash-disk:
RoamDrive and GMail Drive .
[Listening to: Manu Chao - Infinita Tristeza]