"Electronics" is a pretty big area. What exactly are u looking for?. People on "this" forum for example mainly talk about "building computers". As in putting components together and overclocking them. Discussions about the actual "design" of components is usually not discussed. Which is somewhat unfortunate, b/c that is an extremely interesting area of course.
And electronics is even a bigger area.. I doubt you will find any forum in electronics that is as active as this one though.. People here love computers. And they use the computers they love to talk about computers. I doubt people in pure electronics spend that much time on computers to post this much of stuff.