As noted, I think employment opportunities are one way to potentially get some cash. the bigger opportunity is being able to quantify knowledge and expertise in

As noted, I think employment opportunities are one way to potentially get some cash. the bigger opportunity is being able to quantify knowledge and expertise in a subject. All these sites can verify and demonstrate a given understanding and communication of concepts, experience and expertise. Seems like the way to drive revenue would be to provide a potential employer or current employer with a skills evaluation or the ability to find expertise. Plus, all have the ability to connect people who would pay for access to individuals with info or knowledge. Similar to Gerson Lehrman Group.