I'm wondering because self publishing is an option I have just begun to explore.
Self publishing raises questions because there is so much self published rubbish out there. Yet plenty of great material has been self published. Wordsworth and Coleridge did it, Virginia Woolf did it and recently three books shortlisted in the Man Booker prize were self-published.
Also just because something has been vetted by Agents and Professional Publishers there is no guarantee that it is not garbage.
So what do you think, would you review a self published book?