Approved backlink for your site is not enough. Sometimes Google can’t index page where backlink appeared especially if it is large social site with missions pages, forum, or site which is not powerful enough for search engines.

  After your link appeared on web page you should visit it in 3-4 weeks to see if page appear in Google search results. Double check if Google has cached shot of the page and your link is there.

 When Google spiders can’t reach page and it never indexed it means that link can’t give extra credit to your site. You can help Google to find it by linking this page from other source. Social bookmarking sites is the best way where you can link this page. Use social sites where members can save links for them self without sharing with community. Magnolia, Furl, Stubleupon, or Simpy is a great way to do it. Sites like Digg or Mixx could ban you for submitting pages without real content unless if you have content link which appeared on weak site which doesn’t have enough power for Google.

  Creating links for pages where your link already appeared will increase value of this page and this value will be passed to your link.