Yes, Discovery Educators have made themselves know on Web 2.0 tools. After all, call them social networking tools, so certainly the Discovery Educator Network folks ought to be using, connecting, and learning on these tools. A few web 2.0 places to find DEN and the Texas DEN are:
Name: Discovery Educator Network
Category: Organizations – Academic Organizations
So, come on! Explore the World (Wide Web 2.0)!