I would like to select the best SEO friendly URL format for my WordPress based picture site. But I am not sure about the impact of SEO in the following formats. In other words I want a better format to help me from duplicate urls problem.
Or let WordPress add numbers on the end to avoid dupes e.g
I am in the urge to put Unique ID or any number to prevent from the duplicate of urls and not for any other feature as this site does with Unique ID.
By the way do search engines consider
www.example.com/title-2 more weight compared to using just