Google search indexes itself
A better example url is <a href="https://www.google.com/search?q=site%3Ahttp%3A%2F%2Fwww.google.com%2F%2Fsearch%3Fq%3D" rel="nofollow">https://www.google.com/search?q=site%3Ahttp%3A%2F%2Fwww.goog...</a><p>Note that switching //search to /search eliminates the phenomenon.<p>Note too that all the results on page 1 and page 10 are related to hostgator and coupon codes.  I expect that there is some site which contains some text or links that cause these results.<p>Note also that the `site:` search operator isn't supposed to include anything but a domain or subdomain: no <a href="http://" rel="nofollow">http://</a> nor /search should be included.<p>Finally, note that the results are actually google search pages, though!  So I do think this is some kind of bug.<p>But NOT an instance of Google indexing its result pages.  Please change the title to 'This one weird google bug will make you scratch your head!' :)<p>Edit: andybalholm suggests (on this page) that the double slash is in fact causing the googlebot to visit those search results page and indeed index them.  Hm, sounds true.<p>Has anybody visited the spamfodder pages and found instances of malformed yet operative links to google search?  (I don't feel like visiting those sites on this machine on this network.)