Hi Nikolaos,
You may want to check again my video. The lists posted were not clickable.
What was clickable was the content that was pull down from the website that goes below them.
You can check it at: http://www.dnntutorial.com/Discussions.aspx
In regards to features in the professional missing in the community, I'm not aware of any related to social.
Cheers,
Aderson