All Stack Exchange sites (except Stack Overflow) have a giant footer:
Here is a userscript if you don’t want to use StylishUserscript:
// ==UserScript==
// @name Shrink the Footer
// @namespace https://stackapps.com/questions/7091/34727
// @version 0.1
// @description shrinks the SE footer
// @author J F
// @license MIT
// @grant none
// @match *://*/*
// ==/UserScript==
var style = document.createElement('style')
style.type = 'text/css'
style.innerHTML = '#footer-sites{display:none!important}#footer #copyright,#footer #svnrev{display:inline-block!important}#footer #svnrev::before{content:"//";margin:.25em}'
document.getElementsByTagName('head')[0].appendChild(style)
$('#svnrev').appendTo($('#copyright')) // move the copyright inline
install view source
adapted from this answer