I've set up a comm now (basic_journals), but I'm waiting to hear back from brown_betty whether or not she's okay with me linking to her LJ backup guide.

It'd be awesome if you could pimp out the comm, but best wait till I've got it all figured out and set up, which might still be a while - I'll let you know :). Still gotta think of the best way to handle this - because ljArchive and LJSec only run on Windows. I'll have to find out if there are similar progs for Mac.