In my opinion, there are two distinct approaches to cataloging; Offline and Online. Me personally, I like offline lists (which is why my list here is so sparse). I just love to rearrange and classify and label things as I like them.
Anyway, I wondered what everybody else thought so included a screenshot.
ps. searched "game collector" in the forums and had about 11 pages of hits - so excuse me if somebody has raised this before...