With or without "www"

[sarra234]

Does it important, when submitting your website to directories or bookmarking sites, writing www in url ?

 

[Laura61]

It's pretty much a matter of personal preference. You should definitely tell Google your preferred version (with or without www) in Google Webmaster Tools; that way you won't end up with both www and non-www versions of your site indexed, resulting in duplicate content. Then be consistent whenever you give out your URL. But I don't think there's a significant benefit to one over the other. Correct me if I'm wrong, anybody.

 

[sarra234]

the website is already indexed both with www and without www

 

[djbaxter]

the website is already indexed both with www and without www

You probably want to remedy that. Follow Laura's instructions.

See Official Google Webmaster Central Blog: Specify your canonical