Feature: Search for unclear text

Transcribers often indicate unclear readings by the standard use of square-braces and question marks, like [this?] or this[?].  As these are control characters for MySQL's full-text search, the normal search can't find them.  Wouldn't it be cool if we could mine these to present a list of pages that need review, akin to the top-ten lists?  At minimum, we need to be able to search for such marks.
