Most services don't allow you to backup your data

I was looking at a recent article by ABC news about online collaboration. See Buying Guide: Online Collaboration Services. It states at the bottom, "Finally, you'll have to rely on your online collaboration service for backups. None that we tested "­offer a way of backing up remote data to your local machine".
This means that they have not tested Lotus/IBM QuickPlace or any Notes/Domino based solution. This seems odd to me given that the Ziff Davis Media Inc group use Lotus Notes internally.
Anyway, because the Notes/Domino solution all use Notes "NSF" databases, they replicate really well and can be taken offline through the Domino Offline Services (DOLS) or in QuickPlace's world "work offline". This has the effect of replicating all the databases to your local machine.
ProjectLounge has customers that use this to extend the backupschedulee for critical projects. ProjectLounge offers Daily and Weekly backups but some users want more and with the ability to go offline, you can backup your own data very easily. Also, unlike many SQL or dump based backups, you can open the databases with Lotus Notes and inspect the data from the back-end and use copy/paste to put deleted documents back into service.