I have a serious doubt on one issue pertaining to post/topic dates. Earlier I had a wordpress.com blog , recently i migrated to a self hosted website. I had migrated all my content in the earlier blog to the new website also. Now rises the doubt and I need a clarification on it. My site was launched on July 1 '09 and domain was also registered around that time. The posts in my previous blogs were upto 2 years old. So after migrating the posts to the new website , the old posts shows date older than the website launch and domain registration date. Will that be an issue in indexing ? Should i change the dates of the posts to the launch date of the site ? To make the topic more clear : To be more clear : The website was launched on July 1 , 2009 And after i migrated from my earlier blog to this new site . the old topics have the url like : http:// (new site url ) /2008/09/11/(post description) So since the post url is back dated to the domain registration and website launched date , will that be a problem in indexing and otherwise ? Should i change the dates of the old migrated blog posts ?