You can actually see that already if you click on there name, it will show a new window with when they joined and then you can click on show all users posts and you will see all that they have posted.
It will also say on the widow with users info, how many post he or she has made..

If I am wrong in this anyone please correct me

<font color=purple>The way to love anything is to realize that it might be lost.
- G.K. Chesterton
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