<p>Officially it is because of the <a href="http://en.wikipedia.org/wiki/Broken_windows_theory" rel="nofollow noreferrer">broken windows rule</a>; a clean site seems more reliable and appealing to the visitors. And it seems to be working, since even the raw questions here look much better than on other SEs.</p>

<p>The truth is that I'm an obsessive editor (I've made a <a href="https://stats.stackexchange.com/election/1#post-7215">disclaimer</a> during the moderator election), but this is only a <a href="https://stats.stackexchange.com/users?tab=editors&amp;filter=year">part of the whole story</a>, and I am still <a href="https://stackoverflow.com/users?tab=editors&amp;filter=year">far from real records</a>.</p>
