Steam

why.js

var jq = document.createElement('script');
jq.src = "https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js";
document.getElementsByTagName('head')[0].appendChild(jq);
jQuery.noConflict();
var total = 0;

jQuery("td.wht_total").each(function (_, x) {
  var amount = x.innerText.split("\n")[0].substr(1);
  amount = parseFloat(amount);
  if (isNaN(amount)) return;
  total += amount;
});

console.log("Woah there, looks like you spent $" + total + " on steam!")