A thread at Cre8asite Forums named GoogleBot signs up, e-commerce customer documents the information of a bo from Google signing up as a registered e-commerce user at a particular site. Reportedly, the bot filled out information at this form and clicked the submit button.
The reverse DNS lookup confirms that this was a Google registered IP Address. But it just doesn't make sense, GoogleBot or any real search bot does not act like this. Bots can not and should not submit forms. I may suggest that this IP was spoofed and the useragent was spoofed as well. Or that some data got mixed up in the logs, some how. :)
Forum discussion at Cre8asite Forums.