I've recently added a Spider-Man Trading Stickers section to the site, as a natural companion to the Spider-Man Trading Cards section that has been around for a while.
You'd be surprised how much programming was required in the site back-end to make it work, mostly because a large set of 200 trading cards needs to be handled slightly differently when listing it in the Cards Chronology and Credits pages.
I have good information already on half-a-dozen sets of trading cards, and I've ordered a couple more sets from eBay that will help fill things out. As always, if you collect trading stickers or cards and would like to contribute to the site, you can always Mail Me.