Here are some resources for children who are gifted and their families and teachers. If you have a site to recommend, just let me know, and I'll add it to our collection.
CASEL - Collaborative for Academic, Social, Emotional Learning
Hoagies' Gifted Education Page - A variety of resources
Johns Hopkins Center for Talented Youth - Offers programs for children
National Association for Gifted Children
PA Association for Gifted Education