I'm not bothered much by spiders, but it's nice to know that these yellow ones are harmless, but...
From article (clip there too):
"They cluster in groups of roughly 100 or more per sac, making it extremely creepy for those who hate spiders once the web explodes and there is a scramble of garden spiders on the loose.
It may not be so bad outside, but for those who find these garden spiders inside, it can be a nightmare if they all are let loose in the home."
http://www.techmalak.com/these-exploding-yellow-spiders-will-give-you-nightmares/#.VXtQzkZUWTw
From article (clip there too):
"They cluster in groups of roughly 100 or more per sac, making it extremely creepy for those who hate spiders once the web explodes and there is a scramble of garden spiders on the loose.
It may not be so bad outside, but for those who find these garden spiders inside, it can be a nightmare if they all are let loose in the home."
http://www.techmalak.com/these-exploding-yellow-spiders-will-give-you-nightmares/#.VXtQzkZUWTw