I use the Notes section to record the name and address of the station where I filled up. (My thinking is that I can export this to see whose pumps shut off early vs. late.) I would like to have the ability to save Notes, because I typically only use two or three stations.
Alternatively, if I could just save one particular Note for my profile (or per vehicle) that would be better than nothing.
Notes are completely free-form so people use them for all kinds of things. We're probably not likely to build saved notes into the site, but you might be able to come up with a system to make it easier. Maybe you could visit your profile page before each fuel-up, copy the text, go to the fuel-up page and then paste into the notes field.
MB330, check out the FAQ on partial fuel-ups: "Once marked, Fuelly won't calculate MPG for that fuel-up or the next." Once Fuelly has a full tank to work from again, you will get an individual MPG calculation for a fuel-up.