Spiderexpert wrote: Yes, they are cool. I've seen a few before and I've done some reasearch on them. If you ever see one, just let it be. As poppysue said, The yellow garden spider is a gardeners friend. Bites result in mild itching and swelling for a couple days, though it is believed their bites could inject a small amount of neurotoxin as well, but they will eat any grasshopers that kill your plants.