Community 

Gifted and Talented Adults
Live Journal discussion community. Weblog format.

My Gifted Life
A new forum for gifted adults and parents of gifted children. Has a nice broad range of topics. Still in development, so there's room for suggestions about topics, directions, features, etc.
 

Web Sites 

Hoagies Gifted Education Page
The grand daddy of gifted resources. Huge site focuses mostly on children and schooling, but has a section for gifted adults.

Gifted and Creative Thinking Archives
A partial archive of posts from Eide Neurolearning blog. Links may not always be correct. The focus is neurological science related to learning.

Gifted Development Center
Linda Silverman's site. Silverman provides counseling for the gifted, and developed the concept of visual-spatial learners.

Information for Gifted Adults
A hodge podge of links, many of them useful and unusual, others just strange. Always interesting to see what's been added since the last visit.

SENG: Supporting Emotional Needs of the Gifted
Articles centering on emotional problems and solutions. The forum has been discontinued.

Stephanie Tolan
Tolan is a well-known writer and speaker. Her novel, Welcome to the Ark, is part of a trilogy for young people. Author of "Is it a Cheetah?"

Talent Development Resources
An extensive collection of articles, interviews, books, etc. Well worth diving into.

Visual-Spatial Resource
An outgrowth of Linda Silverman's work on visual-spatial learners. Resources for parents and teachers.

Dabrowski's Theory of Positive Disintegration
THE authority on Dabrowski. Many resources, and a correction for popularized interpretations of Dabrowski's work in reference to the gifted.

Blogs 

Gifted Exchange
“...the blog about gifted children, schooling, parenting, education news and changing American education for the better.”

GT Adults
“Gifted/talented, high ability personal growth” Supplements the Talent Development Resources site. 

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"Classical education, homeschooling, gifted education, education, public school" No-punches-pulled discussions.