I just discovered a tool that might be of good help for webmasters. It is called 103bees (available at 103bees.com) and it offers detailed statistics and in-depth information on the search terms that drive visitors to your pages. I just started using it, so I can't tell you my impressions so far, but I saw on their site that well-known bloggers like Darren Rowse or Seth Godin use it, so I thought it must be something in there. If anybody here used it and can confirm its utility, please do so. Thanks.