gistfile1.js

  function Source(url){
		this.url = url;
		this.morelinks = ['NO CHANGE'];
		this.calculate = function(url){

			console.log("Calculating: " + this.url);
			console.log('1: ' + this.morelinks)

			var parse = function(err,resp,body){
				console.log('3: ' + this.morelinks)
				this.morelinks.pop("ADDED ONE");
			} 

			request(this.url,parse);
			console.log('4: ' + myResults.morelinks)
		}
	}

here's what the console prints

Calculating: http://www.reddit.com/r/videos
1: NO CHANGE
2: undefined
4: NO CHANGE
Express server listening on port 3000
3: undefined

forgot to include

myResults = new Source('http://www.reddit.com/r/videos');
myResults.calculate();