The counter is determined by the URL. These social network sites uses the url of the blog post as the "id"

Hm, i dont understand...

Hey Dennis,

What my colleague mean is Facebook count will get the total number of times Facebook users have clicked a link to the post page from a share or like. Hope this explanation help.

By the way, I just tried to click Facebook `LIKE`, it shown +1 now.

Hi Arlex,

but i dont understand the fact, that if a complete new post was created and in the same time there is a share?

Perhaps the same URL was used previously and someone else has already liked the item? You can try placing the URL on Facebook's debugger tool at https://developers.facebook.com/tools/debug/ to get a better idea