My company (LTX-Credence) is going social in a big way.
I've been involved with a team for several months now doing a complete revamp of our external web site. It's live now (at http:..www.ltxc.com) and we're pretty happy with the results. We used to have a static, very "corporate", site with very little content (and to be honest very little reason for customers to come back).
All that has changed. We now have a good-looking site with a regularly updated informational blog, and opportunities to connect with us on social media like Twitter and Linked In. We even have a YouTube channel (http://www.youtube.com/LTXCredence) where we're starting to post videos with our experts talking about various industry issues, not specific to our products. Our first video features Lenny Leon, one of our RF experts, talking about 802.11ac test challenges. Take a look: http://www.youtube.com/watch?v=LzA0W1yTf4A and let us know what you'd like to see in the future.