Some CSS tweaks that make it slightly more bearable (at least on my 1920px wide display)

  /* disable social sharing buttons */
  .lf-selection-popover,.lf-thread-btn{display:none;}
  aside#social{display:none;}

  /* make sidebar thinner and content wider */
  @media only screen and (min-width: 1024px){#sidebar{max-width:20%;}}
  @media only screen and (min-width: 1024px){div#main{max-width:80%;width:auto;margin:0;}}
  body>div.container{max-width:none;}

  /* make blog post wider */
  article.post{max-width:none;}