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So glad to be of help, Erik. Thanks for using Q&A! Miriam

Hi Erik, No problem, glad I could help To answer your question, No it doesn't matter which you use because the end result will be re-written to remove the file extension and add a forward slash at the end. For consistency I would suggest having it without the .php inside your content though. If nothing else it would save you the pain of having to remove .php from your content if you moved to a content management system in the future. If you've got any other questions let me know, and I'll be happy to help. Ben

Hi Erik, I'm not sure there's a way to get those shares back. I do know however that Twitter follows the rel=canonical on a page so you might want to try that instead as a test to see if Facebook will honor it as well. Hope this helps a bit! Jen

You need to also consider user experience and if people find those links helpful. Try installing something like CrazyEgg or another click tracking software that will tell you which links (not just which URLs) were clicked on to see if those links have any value for the user.