This journal has for some time been mirrored on both DW (where I write most/all of the posts) and LJ (where I started), and I read my friends-lists/circles regularly on both sides of that mirror. I expect to continue to do just that for as long as the lights are on. Any content I post will be available on the DW side if the lights go off on LJ, and given that this is almost purely a fannish journal, I see little likelihood that Koschei the Deathless et al will choose to come after me.
Having said that: I do encourage anyone on the LJ side who is concerned to create a DW presence (there are tools whereby one can import an existing LJ over to DW essentially intact, thereby preserving the content), to add me to your DW reading page, and/or to let me know if you have a non-mirrored DW account to which I ought to connect. The DW visual interface is as highly customizable as LJ's is (being built from the same base code), and though the vocabulary is a little different, the underlying structure is much the same. At the moment, one need not have an invite code to create a DW account; if that changes (which it might if there's a mass exodus), any spare invite codes I happen to acquire will be mentioned here and available by request.