Hi guys, I recently stumbled upon a SEO question watching our competitors: They have bought some aged High PR domains (relevant or not) and they have re-directed those domains to their main domain. Let's assume I have a website with PR2, if I purchase an aged domain with PR 4 and re-direct it to my main domain does it make my domain increase to PR 4 or at least 3. Does it matter if the aged domain backlinks are relevant? Does it make a difference if instead of re-directing build another relevant website on PR 4 domain and then have one external link only to your main website (PR 2)? Thank you,