This is the list that I have compiled so far. If you go to consumersearch.com and put "online backup for mac" in the search box, you will find a pretty go compilation of options. More keep coming out however, and my slightly annotated list shows that Backblaze and Crashplan have caught my attention. Mozy is very popular, but also has many detractors as there seem to be problems with its restore. I haven't made the leap yet myself, but have been seriously considering CrashPlan. I use MobileMe and would like to keep photos only there. I hope this is helpful. I am interested to hear anyone's experiences with this.