I emailed Google about this one last week and they've confirmed that they report their user agent as "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)" , ""Googlebot/2.1 (+http://www.google.com/bot.html)", and "Googlebot/2.1 (+http://www.googlebot.com/bot.html)".
preso da:
http://forums.seochat.com/archive/t-13975