I'm guessing its because he actually uses his twitter account. Shares interesting information and people will follow you. As a CTO I would think you guys might actually look at using it for your business...
I use it to connect - exactly. I've been able to join valuable groups, find competitors, develop partnerships, and follow conferences that I couldn't attend. I get updates about new technologies to use, industry updates. Seems like pastonrod knows what I mean. FB gives me poop diaper updates from friends. Not biz friendly really.