gistfile1.js

var request = require('superagent');

var base = 'http://eadoyle.tumblr.com/page/';

for (var i = 0; i <= 97; i++) {
  tryPage(base + i);
}

function tryPage(url) {
  request.get(url, function(res) {
    if (res.text.toLowerCase().indexOf('portal') !== -1) {
      console.log("Found portal:", url);
    }
  });
}