title: web scraping for mobile apps
body: <p>I have a question regarding web scraping/web parsing with mobile applications (an iOS 7 app as of now...). For example, I want to have images from various websites retrieved and aggregated to a device based on user inputs/preferences. I want the user to be able to select and store those images on the device with offline viewing capabilities as well. I have heard that using jQuery and JSON for parsing and programming through the server-side rather then the front-end is supposed to be more efficient...correct? 
  What type/s of algorithms/code that I should use for performing website parsing and aggregating content into a mobile app? I apologize for being quite broad, I am in the early development stages. Thanks.</p>