I'm just curious about it, if I can write guest posts to 50 high PR websites, is it worthy enough to beat 500000 backlinks from unknown PR websites that I've got not from guest writing?
Just try it, and give me your report here, so other member can get the benefits from your trial and error process
Make sure that it will work from yours and make a report to be post here if really been have a positive effect to your site.