I am very curious about Page rank attributed to a domain that belongs to a company that operates in my market. The domain is: www.portalis.co.pt It shows a Page Rank of 5, and tuirns our about 303 back-links on .http://www.iwebtool.com/backlink_checker however, upon closer inspection, the back-links don't really seem to exist. So where is the back-link checker getting this data?