"Alternatively, customize your reply when you get the Googlebot user agent." WARNING: BE VERY CAREFUL DOING THIS! This is one of the main ways that the google

"Alternatively, customize your reply when you get the Googlebot user agent." WARNING: BE VERY CAREFUL DOING THIS! This is one of the main ways that the googlebot detects spam/malware sites and doing it can utterly destroy your ranking forever in some circumstances.