I have a friend who is a plumber. We both have been looking into building separate PBNs. He came across a website for a plumber. That website has many links to other plumber websites( it looks like they link to each other for a mutual benifit). They have about 50 links to other plumbers in different states and cities. There are about 10 links that are "broken" because the domains expired. The reffering website has a PA/DA of about 20/20 and TF/CF of 19. The expired domains seem to have about the same with TF ranging from the teens to low 20's. 1.Assuming the backlink profiles are fine (I looked at 2 and they were clean, although i have not gone thru them all) would you build a PBN with them? It seems it would be a little weird to make a PBN of them since they are other independent plumber websites, then again this makes them relevant. 2.Would a 301 direct be better? I dont know to much about 301 but I feel that would be too many 301's. 3.I am also thinking it would be a bit risky since the referring domain would probably eventually notice its not the same site anymore, or would it not matter if they removed the link from the site? 4. Is this a great find? Or is it just about as valuable as finding any other doamins (non relevant) with the same specs?