title: Continuously Updating Data Algorithm
body: <p>There is information on a website that is neatly listed and every so often (not on a set schedule) it updates with new information. I am wanting to write a quick script that will automatically let me know when something new has been updated instead of letting me know every x-amount of house/minutes. </p>
  
  <p>My initial thought was that I would have the script pull all the information I was looking for and store it in a list and on the next scan create a new list and get rid of all duplicates which would leave me with what the new information is.</p>
  
  <p>If you know of an effective way to go about such things and could lead me in the right direction, it would be appreciated.</p>
  
  <p>I'm not really looking for source code, just how to go about it and I'm sure I can put it together after some guidance on an efficient way to do it.</p>