You might not yet be aware of this, but LJ is considering adding an ad-based service level in addition to paid accounts and free accounts. Essentially it'll be a free account with some of the goodies that paid accounts get, but there'll be some advertising in your journal. I mention it mostly because
the discussion is going on over in
lj_biz, rather than in one of the more usual LJ communities. That would be the place to go if you have questions.