How do you keep track of your collection?

[WaxWeazle]

I know there's a few software programs you can use to put your collection in (e.g. http://www.collectorz.com/) but I was wondering what everybody around here uses?

Do you write it down? Type up a list manually? Shout it out here, can always be interesting to come across new ways of doing it!

I myself have an excel sheet that I made but haven't really updated it in a while nor have I properly finished it either.. A lazy collector I guess