I found this website recently
http://figure.tsuki-board.netIt allows you to search in a database for all the Japanese figures you have, and add them to an online collection, even allowing members to buy and sell from each other, keep track of pre-orders, duplicates, etc. etc.
While it is still quite early in development in my opinion, more items get added everyday, and any registered user can add content. This means it improves dramatically everyday, and I really enjoy putting all my collection on there bit by bit and comparing it with others!
There is a vast community to be explored that I have not started to yet, and lots of features such as the ability to tag figures and search by such tags, it then automatically categorises your collection by the number of hits you get on those tags, then displays it in that nice, "the more hits the larger the fointernettyinternetty-way" that seems so popular these days!
Currently I am :
Hopefully this site gets better and better, and I can find all my figures to add sooner or later, although I will do my bit and add one to the database if i find the official pictures and sites ^_^