The dropbox comment sounds a little cheap. Making $12k and going out of your way to avoid paying $10 for a quality app?
I'm REALLY suprised that there are not cheaper alternatives to DabbleDB - if there had been anything a bit cheaper or a bit more ajaxified, I'd have gone for it.
Also, the main reason I don't pay for dropbox is that you need to pay for EACH user! So at just 5 users I'm paying $50 a month. That's crazy wasted money!
I'm doing this with a friend right now, I have the paid account and am using 30+GB, he has a free account, and we share just the folders we need to.