To address a few of the above posts:
Hole-by-hole averages, stats, etc. are what the advanced stats will be. I finished the guts of it over the weekend so I have the average score, # of birdies, # of times played, etc. for every hole (by tee) both on a course level and an individual level. So you can see that on Course "A" you average a 3.2 on hole #1 from the red and a 4.1 from the golds. You can see those same stats on the advanced stats page for a course to get an idea of what all players average from that tee, how many total birdies there have been, etc.
Regarding exporting data it's something I'll probably look into down the road. If it makes you feel any better, the entire site, photos and all, is backed up off-site every 24 hours so the data is definitely safe. I pay extra for that service for my piece of mind so should anything horrible happen I could have the site back up and running fairly quickly with a minimal loss of data.
As far as notes go, those are mainly for yourself.. at least that's what I use them for.