Save files online (and syncing) them too

There are many ways of saving files online and possibly syncing them thereby. Here are some alternatives I have found:

- Skydrive (5gb free),












- MSN shared folder,
















- Office Live (integrated with the MS Office suite)




- Gdisk (a software that turns your GMail account into a portable hard drive)


-mailbigfiles.com (not really storage as such, only another way of distributing large files rather than sending via email, but I find their free service better than YouSendits)

-YouSendit(not really storage as such, only another way of distributing large files rather than sending via email)

- Amazon S3 ($0.15 per GB-Month of storage used AND monthly trafic cost)

- Apples mobile.me (Individual One-year subscription $99)






And finally my favourite: Dropbox (invitation only, but giving you 2gb free, with cross-platform functionality and web interface too. And its just drag and drop!)