Look at the company you work for. They probably do lots of things in archaic or inefficient ways. Hack something together that makes things easier, and then get your managers and co-workers using it so you can get feedback and make changes. Eventually you'll have a product that you might be able to sell.
Even better if you can solve a problem that is industry-wide instead of company-specific. That gives you a bigger market for whatever you come up with.
However, the people in the video all sound like they're making a sales pitch rather than really talking about what they do all day.
Are you going to encourage people to talk about the mundane or undesirable parts of their job? The paperwork, the late hours, the time away from family, the competition, the politics, the discrimination, etc?
1. More intelligent and diverse discussion. I don't know how you would do that, but try to make it the opposite of reddit.com/r/politics.
2. Convenient links to relevant background information for the article. E.g. relevant statistics, opposing viewpoints, press releases, wikipedia articles, a summary of "just the facts" from the article, previous quotes from the people the article is about.
Also, I know you weren't asking for feedback on the site, but the name would otherwise make me assume that it's a site about atheism.
Even better if you can solve a problem that is industry-wide instead of company-specific. That gives you a bigger market for whatever you come up with.