] The search company has blocked users for the use of
] automated queries, but many of them are not individually
] responsible for breaking the rules
]
]
] Dimandja Emoungu got a surprise when he tried to search
] Google this month: Instead of a results list, he says,
] the company handed him a "rude" note denying service.
]
]
] Emoungu is not alone. This month, about 100 Comcast
] subscribers were temporarily shut out of Google when the
] search company charged the high-speed Internet access
] provider with hosting some accounts that had abused its
] terms of service by performing "automated queries." The
] crackdown cut a wide swath, taking out a block of IP
] addresses, shutting down the guilty and innocent alike.

#1 Search Engine Optimisation Blog - Google protects its search results - ZDNet UK News