Hi Guys, I'm new here. So I thought of sharing my knowhow on this tool called "NetPeak" Its basically a Domain research tool (free) you can add lot of domains and start it, it'll show you PR, Domain Authority, Social Signals, Moz Rank, Alexa, # indexed URLs and Much More. I use it for making research on expired domains, its great. Best thing - Its free. Try it out, If you make own PBNs, its ideal. Enjoy!