WWW - GMail Drive shell extension
That’s as easy as it sounds. Use your Gmail account as an internet drive worth of 1Gb. You’ll have to use XP, and avoid files bigger than 10Mb (Well, zip or rar are usefull apps anyway) because gmail can’t handle them by limitation. Afterwards, it’s all yours. You inherit a new drive online. There are no garantee that Gmail won,t stop supporting that feature, or even cancel your account. For my own, I won,t abuse, but certainly use it from time to time because it is very convenient.
[…Read more in extended…] When you create a new file using GMail Drive, it generates an e-mail and posts it to your account. The e-mail appears in your normal Inbox folder, and the file is attached as an e-mail attachment. GMail Drive periodically checks your mail account (using the GMail search function) to see if new files have arrived and to rebuild the directory structures. But basically GMail Drive acts as any other hard-drive installed on your computer. You can copy files to and from the GMail Drive folder simply by using drag’n'drop like you’re used to with the normal Explorer folders.
From viksoe.dk : GMail Drive shell extension
GMail Drive is a Shell Namespace Extension that creates a virtual filesystem around your Google GMail account, allowing you to use GMail as a storage medium. GMail Drive creates a virtual filesystem on top of your Google GMail account and enables you to save and retrieve files stored on your GMail account directly from inside Windows Explorer. GMail Drive literally adds a new drive to your computer under the My Computer folder, where you can create new folders, copy and drag’n'drop files to. Ever since Google started to offer users a GMail e-mail account, which includes storage space of a 1000 megabytes, you have had plenty of storage space but not a lot to fill it up with. With GMail Drive you can easily copy files to your GMail account and retrieve them again.