I use syncplicity. MS is coming out with a new service, based on "Foldershare", called "Windows Live Sync". It'll be out soon. Here's the email I got about it:
We're contacting you to let you know what's next for FolderShare, and to make you aware of some important changes.
In December, we plan to announce a product called Windows Live Sync. You can think of it as FolderShare 2.0. It's going to look familiar and offer the same great features, plus:
* More folders and files?sync up to 20 folders with 20,000 files each.
* Integration with Windows Live ID?no more extra sign-in stuff to remember.
* Integration with the Recycle Bin?no more separate Trash folder to fiddle with.
* Unicode support?sync files in other languages.
A huge part of Sync's success story depends on FolderShare users like you. When Sync releases, FolderShare goes into retirement. That means your FolderShare software will stop working and will ask you to upgrade to Sync. Once you do, Sync will automatically rebuild your personal folders. We expect a lot of new users when Sync is released, so if you can't sign in right away, please give it a little time.
Here's the part you need to pay attention to: Sync will not be able to rebuild your shared libraries. If you have a lot of shared libraries, you should hop over to the FolderShare website while it's still available and copy all that information. You'll need it to rebuild your shared libraries in Sync.
Thanks for being a FolderShare user! We're excited about delivering an even better file-synchronization experience to customers like you. We hope you'll come along as we move forward with Windows Live Sync.
The Windows Live Sync (formerly FolderShare) team