TopCashback Bird Watcher
Always on the lookout for the gift-bearing hummingbirds that inhabit TopCashback.com, this script grays the browser tab icon for any retailer page that does not feature a hummingbird. Once a bird is spotted the corresponding hummingbird tab icon returns to full color.
Useful for exploring a large number of habitats at once. Open-to-background-tab many retailers then wait a few seconds to see if any birds pop up in the tab icons. Simply close all tabs if your budding hobby as digital ornithologist is unfruitful.