Hi, I just learnt today that creating a wordpress MU site is a great way for backlink building but have not found that much information on the net on the subject and was wondering whether anyone of you out there could spread some light on the subject. How do Wordpress MU sites work? When I find one on google and then join it and create a profile page and add my link do they normaly have ******** links that provide PR? is that how it works? or does the power come from creating a whole MU site and letting people create off it? Looking forward to hearing what you all have to say about it.