I think you're right about LJ - there's no long term future for fandom, there. Except for the fact that there are still a few cherished people on my flist who are LJ-only, I'd be gone completely now. My fundamental issue with LJ is simply that we (meaning, fandom) are not part of its target user group or strategy or whatever you want to call it -- we're just a little enclave to be ignored. While I'm not evangelistically pro-DW, the one major advantage it has over LJ now is that DW is *for* us in a way that LJ sadly no longer is.