Altered PHP to return objects with 'isImage' parameter whose value is true if the URL contained within the tweet points to a picture, and false or null otherwise...changed 'createObjectForCloud' and 'addTweetTags' functions to accomodate for the additional parameter -- looks good so far
Changed Tweet Cloud so that if a tweet links to an image, instead of opening up a whole different window or tag, a modal pops up with the image inside