Below is a screenshot of an Interactive Dashboard that shows a feed from the Sage CRM User Community forums and a Network Update feed from LinkedIn.
Each of these have been created as an RSS feed.
Creating Forum RSS Gadget.
The first step was to find the RSS or ATOM feed provided by the website.
The Sage CRM Community produces one for its different forums. I selected the option to "Get this RSS feed" shown in the image below.
This provided me with the RSS feed URL.
I could then add the feed into the Interactive Dashboard using the RSS Gadget.
Feeds can be authenticated if necessary, but the ones that I have chosen are public.
Creating a LinkedIn Network Update Feed.
You just need to know where you can get the feed.
Scroll down to the Updates section of your home page.
Under the More dropdown menu, select RSS feeds.
You should be able to see that you can enable a feed not only for the updates within your Network but also feeds from the LinkedIn Answers area.
Once you have the feed it can be added just link the Community Feed shown above.
You can find a short training video that explains how to create a RSS Gadget here: https://www.sagecrm.com/player/videos.htm