世界杯买球

As you know, Panda is a Google filter that seeks to stop spammy (low quality) sites from ranking high in the SERPs. In late May the Google Panda 4.0 update was discussed all over the SEO community. The web is…

We hope you use the rel=canonical tag to tell search engines what version of duplicate pages (eg. http://yoursite.com, www.yoursite.com) you prefer to be indexed. This tag is supported by all major search engines: Google, Bing and Yahoo. However it’s sometimes…