Hello, Using open site explorer I'm looking at how many backlinks has a competitor of mine. He has manage to climb up in SERPs and now my site is in second page I can see has a LOT of backlinks from these domains: *.wordpress.com/ Linking Root Domains: 1,940,906 *.blogspot.com/ Linking Root Domains: 3,320,187 *.galeon.com/ Linking Root Domains: 21,458 Do you know how it is possible to place link in these sites? They are placed in blogroll, sidebar and footer... I can't imagine how the site has ranked using this method, I can't believe it... Any idea of how achieve the same would be very appreciated. Thank you!!!