Hi, I allow high quality guest post from users on my site. Before I ever approve a post I first check the web to make sure that no part of the content is posted anywhere else. Once Google indexes it I recheck the web in the event it was submitted to other sites. Today I noticed the writing was published to another site but on my site it was indexed 12 hours before the other site. My site is ranking for the content, theres is not. Does this still count as possible duplicate content since both were indexed so close together?
Or, what if they submit the content to a site thats more powerful than mine, will the content get ranked better on that site?