Sounds intriguing, although pricey.

http://www.nytimes.com/2008/03/27/te...ogue.html?8dpc

The second page of the article has the interesting stuff.

I'm happy so far with Mozy Online Backup (which has saved me hugely once, and in small ways several times. Their email support is also first-rate).

I don't have the need for syncing various computers to be mirrors but for those who do, this sounds intriguing -- but will be interested in those smarter than I to comment