Hi, to convert it is impossible. What is possible is scraping the data/emails, but this is not hitting your target market. Facebook is strictly a social network, while LinkedIn is strictly business - gives you higher probability of getting contacts and business.
We wrote a book about LinkedIn, so we do know and we have been in the social media for quite some time so we have a solid knowledge in this area. If you like to know more about this, feel free to contact us.
If you are looking for a contractor to connect you to your specific target market, we can help.
w3webservices(at)g-m-a-i-l(dot)com