I know a lot of people use the registry. I catalog mine as another form of backup for insurance purposes. It's one more way to try and cover my rear. I definitely register any card, whether it's part of a specific set or not. Just don't get hooked in to the I need to beat others mentality and the registry can be a great place to look at some neat collections.
Ps - you should put up images. My set is currently in the 90s somewhere.
Adam's T206 Collection