I asked about the efficiency of these filters and was served with this question as an answer: The Efficacy Of Stack Overflow's Question Title Filter
tl;dr - the question title check is pretty effective, contrary to what has been asserted (rather blindly) elsewhere. ~78% of all post titles that trip it are improved in at least some small way, 37% in an unambiguous way. "Hacking around" the filter is in fact very very rare.
