Well, I'm quite disappointed. Without logging in you get almost no info. I already have a Google Sitemaps account so I thought this would allow me quick checks of other sites. But, well no, I would have to "add" them first, of course after logging in. But I don't want my seacrh history sent to the mothership so I…

Unfortunately this is just a very concise introduction into SEO. Of course webmasters can do much more on their own. There are of course other resources you can read more about it: