As mentioned in the project description, this is a fork of the solution presented by the German magazine c't a few years ago. Since then they came up with the successor Shariff, which is also able to display the number of likes and shares.
embedding remote content like tweets or videos without compromising your privacy.
We also had a lot of customers who didn't know that the internet existed outside of "the blue 'E'". With those ones I usually helped get Firefox installed.