Just had a look at the Dabble DB demo and it looks awesome. Simple and highly useful. Definitely signing up for this. (Yes, the whole deal with letting other people handle your important data is still scary - but soon somebody will start The Hosted Data Backup Company that does backups of your GMail, Writely, Dabble, Flickr, yada yada yada data repositories and they will in turn standardize the output formats of these apps. and that will in turn make desktop applications that back your data up easy to write. Markets at work. Lovely.