I am currently in the process of designing a small database driven website where I will be using it to keep track of all my notes. I currently have no idea when I will finish it, but it keeps me busy during the summer months.
Some fields I plan on incorporating for each individual note are the Charlton, denomination, series, signatures, fpn/bpn, serial, condition (reference to TPG link if avail.), catalogue value, and additional remarks. Also some check boxes that will indicate if there is anything about the note, e.g. special serial, replacement, error, scan of note available, etc.
I currently have most of this info in raw database form. Just working on a way to easily display/edit this information..