Few days before I read an article on URL Canonicalization. People are saying url Canonicalization is necessary for search engine crawling purpose. They are saying http://www.example.com/index.php?id=1 http://www.example.com/index.php?id=2 http://www.example.com/index.php?id=3 Google will crawl all the pages and consider to be different page. If I am not using id and someone provide link to there site like the way I wrote above. Then my website can be victim of duplicate content please help me to get some solution. Thanks in advance Subikar
If you're tagged as duplicate content, that just means one of the many URLs to the same page won't turn up in the SERPs. But the one they discovered first will. Also, while these are different URLs, and treated that way, Google also realizes they're the same page with different query strings.
IMO, your pages will not be considered as duplicate that's because your pages wont be indexed due to the string "id=" in the query string, refers to google technical webmasters guideline.