I have both Shozu and Vox installed, and I use those two plus Lifeblog depending on what I need. I keep the Vox app around because it lets you choose whether to post media to the library or to a new entry and whether you want it visible to everyone, to your neighborhood, friends, family, or yourself. If Shozu or Lifeblog had those options, I would ditch Vox entirely. It doesn't seem to matter whether I have the "publish automatically" or "do not publish" radio buttons checked; it defaults to "ask every time" anyway, which gets really annoying.