I was trying for a couple of years to find a good database site, but Google was never able to find anything where I could make my own lists; all it ever brought me was to people that made their own blogs showing off their own collection... So I was using the classic "make a Word/Excel document" to keep track of all I had, but it was always a mess and it would have been a pain to put all the details on everything...
So, about a week ago, Google threw me a bone and sent me to VGC... and it's exactly what I was looking for. A super detailed but still easy to manage and modify collection database.