I am not convinced by the underlying concept; I initially ran queries as well in Google to find Github users located in my town that I may be interested in meet

I am not convinced by the underlying concept; I initially ran queries as well in Google to find Github users located in my town that I may be interested in meeting. The thing is that these people are usually not the ones you can hire, they are more proxies that may help you build a network of connections which will help you reach out to a potential candidate. In the end, I think you'd need to tap in a much wider community than Github to find your next hire; it's what the cool kids use but it's far from being the white pages of the development community.