After setting up a blog at blogspot.com I added the site to my webmasters tools of google. I noticed an error: "Restricted by robots.txt" and looked a little into the matter. I found in the ...
If every single link to a given website www.example.com points to a page in a particular subdirectory (i.e. www.example.com/user/[something]), but that directory is off limits as per robots.txt, i.e. ...