Since 2005, EmbeddedRelated.com has been a useful resource for Embedded Systems engineers.
You can participate in the comp.arch.embedded usenet group, to rate embedded systems books, internet resources and blogs. This requires a free registration.
A winnowed collection of Embedded Systems Books useful to the beginner or even the professional.
DSPRelated.com – Portal for DSP Engineers, with discussion groups and forums, web access to Comp.DSP, a database of DSP books.