Yes Gwyn. The three legged spiders go all around the interweb looking at websites. They also go up and down phone lines, and if you stay connected to the web for too long they get into your PC. Not much of a problem if you have and old fashioned modem (keep a katana next to your PC just in case) and if you have broadband their a serious problem. That's why people like me have firewalls behind their PCs. When the spider comes along the napalm in the firewall ignites and drives the little buggers away.
There you go Gwyn, now you know how Google works.
