4 websites with same content?

[marknorman]

I have 4 websites (1 Main, 3 duplicate) with same content. Now I want to change the content for duplicate websites and main website will remain the same content. Is there any problem with my thinking?

[WGW]

That sounds like an excellent strategy as long as it's executed properly! Will you be 301 redirecting the 3 extra domains?

[TommyTan]

Hi Mark,

Agreed, you should definitely change the contents for the duplicate websites; however, you don't have to remove the duplicate contents from those sites as it might've generated a few links, authority or bookmarked.  I would suggest using 301 redirect from the duplicate site to the Main site's content.  Make sure content A of duplicate site redirects to content A of Main site.  Another method is to use cross site canonical to tell engines that the content on the Main site is the original.

Good luck creating new contents!