one of my friends who by mistake cancelled hosting for the site rateemo.com got a pr6 how is that possible. he has no back links
I also see some high pr sites with no or only 1 backlinks.It becomes common since the last two updates.
That is old domain Creation Date: 07-dec-2007, so I think your friend buy expired domain with PR6 exist.
May be the site was redirected to a PR6 site and that was why it got a PR6? I think people can get fake PR via doing the redirect thing.
it is a fake PR6, check: http://74.125.45.104/search?hl=zh-CN&q=cache:www.rateemo.com/&btnG=Google+搜索&lr=
The way to fake Pagerank is to do a 301 redirect to a high PR domain.... when the PR update happens, the URL you redirected appears to have the high-PR of the other site in the toolbar. After the update you take off the redirect and put your normal content up, and voila... the PR stays until the next update. I haven't tried this before, because I have no reason to, but that is how it is accomplished from what I have read. It's a pretty stupid move, and people do it to sell a bunch of overvalued links.