This was a some nice competition to me.Currently Search engines do a major part in World Wide Web.Therefore Darren rowse (Problogger) needed to know the popularity of the his highest search term among the users in Search engines.The answer is “About me”.
But many participators guess many search term queries like “make money online” , “blogging tips” , “problogger” ,”best adsense tips” etc.
See that article which gave a high traffic to problogger in June,2007.
This is the article How to write “About Me page”
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do you mean it his highest search term for his site in the engines?