eServiceinfo.com
Electronic equipment repairs, service manual and data sheet retrieval discussion forum.

The Home Theater Forum
Open discussion about anything home theater related.

ITIL
Dedicated to the IT infrastructure library: the emrging standard for information technology.

Digital-United
Massive rp and discussion forums, hosted on a high speed server.

Head-Fi
Forums and meetings for headphone HiFi enthusiasts.

ePanorama.net
Reference site for all electronics applications. Tutorials on power supplies, testing, audio, microphones.

World Tube Audio Portal
Extensive list of links and topics on vacuum tube audio applications, projects, theory, and design.

All About Circuits
Offers a guide to electricity and electronics.

Design Notes.Com
Design engineering information and resource site for engineers, students and hobbyists.

Circuit Cellar
Embedded MPU, EE PIC, DSP, Robots.

TechOnLine
An online electronics university. Take short and informative online courses in Electronics. Short.

EverythingPCB
Online-only product and resource guide for the printed circuit industry.

Stepper Motor Forum
Online forum for sharing information and technical expertise related to stepper motors. Post a question or share your knowledge.

Pdaphonehome.com
PdaPhoneHome.com provides pda Phone owners with news, forum, FAQ about PocketPC Phone Edition, Pocket PC, Treo 180, 270, and 300, Thera, Nokia Communicator 9210, Kyocera 7135 and 6035, Danger Sidekick, Sony Ericsson P800, Samsung i300 and i330, Microsoft Smartphone, and RIM Blackberry.