DotNetNuke 6.2, set to be released soon, contains some new Facebook-like social features that could be very useful for businesses looking to add social functionality to their websites.
Basically these features will allow companies to easily build internal social networks that previously had to be done with third party modules.
The DotNetNuke team recently published a video walking through some of the new social features. I've embedded it below along with some screencaps to give you an idea of what's possible in DNN 6.2.
Let us know if you have any questions about implementing these features on your website.
The social groups page.
The group activity page.
The profile page.