I ran across this question. As usual it had a very boring title. Namely,
"How to solve this system of equations??"
Usually I'd edit away the superfluous question mark, but I was quickly informed that a title without the extra question mark already existed. So I picked a different title.
I was genuinely surprised by this, could this mean that the repetitive punctuation common to level 1's is partly to blame on a saturation of available titles? This would be interesting as I always thought these extra "!"'s and "?"'s were just desperate attempts at getting extra attention.
Could there be a more fundamental problem underlying this? Maybe we should encourage more useful titles, not only for attracting views, but also for avoiding running out of useful available titles.