I want to buy a domain from one person, that domain is PR4, but after i've checked on opensiteexplorer, i saw one strange thing about it. When i check with just http:// (no - www) it shows no DA/PA no backlinks ( it says they don't have data for it). When i check with http://www. it says that this domains redirects to another domain which has high DA/PA and a lot of backlinks. I can choose if i want to see data for this current domain (that i want to buy) and when i click on that, i can see small DA/PA and only a few backlinks. What does it mean? Why when i type with www in search it says that it's redirecting to another domain? Also when i've checked that another domain, i can see it has only PR0. Can someone explain to me what is this about?