Hmm, there's also a lot of sites still going that just aren't the same.
Anandtech has always been my favourite. The articles are still good and can still get good answers on the boards, but I no longer feel any sense of "community" on the boards when I drop by. Actually I rarely feel any sense of community online anywhere now.
Even Reddit has nose-dived, on the main page anyway, I think thanks to the demise of Digg.