Trick about getting do-follow backlink from Gmail. (You'll need 2 Gmail accounts to make it work) 1. As you all know, Gmail inbox is having PR 8. 2. Just send an email to other gmail id and make it stick (don't delete it) in user inbox and get a backlink. 3. As you'll be having control over the link, you don't need anyone to manage it. More easy and unique trick are on the way. Show your SUPPORT by +Rep and Thanks!