I went on websitegrader.com and it came back with the following: Search engines may think www.pofusers.com and pofusers.com are two different sites.You should set up a permanent redirect (technically called a "301 redirect") between these sites. Once you do that, you will get full search engine credit for your work on these sites. For example, www.pofusers.com seems to have 0 inbound links whereas pofusers.com has N/A inbound links. By correctly configuring a permanent 301 redirect, the search rankings might improve as all inbound links are correctly counted for the website. My website is 2 days old. What is this report actually trying to tell me or should I ignore this and put it down to a glitch in websitegrader.com
this is one of the basics of SEO, choose which one to promote and redirect the other one. I use htaccess (i'm using Drupal). If you don't do it, SE's will see them as 2 websites. It's not a glitch, it's a legitimate tip!
I daren't touch it now, since posting I'm on the front page of google for all my keywords www.pofusers.com shows up in google pofusers.com without the www's doesn't bring up the site. I'm guessing google has only bothered with one.
Don't get too excited. You're likely on page one because you're experiencing the Google Honeymoon. Just as quickly as those rankings for new sites come, they seem to go. The problem that websitegrader.com pointed out is something you definitely want to fix and will only help your rankings going forward, not hurt them. They are talking about something called URL Canonicalization.
Looks like both your links (http://www and http:// ) have no backlinks. It is good if you do the redirect at initial phase. Why 301 redirect? If 100 sites gives you backlink to http://www and another 100 sites gives you backlink to http:// then your backlink value are split into to. Because, google looks at http:// and http://www. as two different site. To get the full value of your backlink, do the redirect to your preferred URL from these two.