My site is www.accounting-on-line.com used to have PR3 and 45-50 links which I bought, but sometimes search engine show site as a accounting-on-line.com. I have been advice to set 301 redirection from one to another, however after that PR dropped to 0 and check backlinks program shows that www.accounting-on-line.com has no backlinks at all. What sould I do Where is my mistake? Thank you in advance for all opinions
Most probably search engines will slowly adapt to it and you will get back your pagerank. Join Google Sitemap and set www.accounting-on-line.com as the preferred domain. For Google, that is the better option than 301 redirect.
Make sure that the links are going to the www version, and while you're there, anchor text has to be added and correct.