GetGlue has expanded the features on their site with a new Stickers link at the top of the page and a Stickers feed on the home page. Clicking on the Stickers link at the top of the page will take you to a stickers page that shows you various groupings of the stickers - Limited Time Stickers, Featured Stickers, Groups, and Search. It also shows you stickers that you don't have and will flag the ones you've been awarded.
One down-side to this is it doesn't automatically list stickers that are no longer available. These can be found by searching for them. The images and info for these stickers will appear but the sticker will have a black bar across it with the marking "No Longer Available". (Hint: do a search for "Callie" to see what a NLA looks like).
This is definitely a boon for GetGlue users! No longer will you be stuck wondering what the text or image is for a sticker and you can immediately see if a sticker is live! Now if you'll pardon me, I have to go have a look and see if there is anything that I haven't earned yet.