I did read the article, but I see how the LinkedIn comment is causing you to think of white collar executives.

The fact is that informal forms of networking are how people of all cultures and income levels have always advanced their mutual interests. One of the most effective ways to combat modern poverty is to provide people with mobile devices that enable them to better communicate and build relationships over time.

I'd ask you to consider what a more people-oriented piece of software might look like that would be accessible to as many people as possible and enable very specific use case, such as "I'm looking for a new job" or "I'm willing to be a mentor" that currently get lost in the noise of all-purpose social media.