anchor.diff:  	if (sort_by_checked.indexOf('following') != -1) {
   		params['following'] = true;
   	}
  +	if (sort_by_checked.indexOf('popular') != -1) {
  +		params['popular'] = true;
  +	}
   	categories_checked = [];
   	$('#categories li :checked').each( function () {
   		categories_checked.push($(this).attr('value'));
  
positive.code: 	<ul id='sort_by'>
  	<!--<li>
  	  <%= check_box_tag 'sort', 'recent' %> Most Recent
  	</li>
  	<li>
  	  <%= check_box_tag 'sort', 'popular' %> Most Popular
  	</li>--> 
  	<li>
  	 <%= check_box_tag 'sort', 'following' %> Following
  	</li>
  
negative.code: 	if ($('#date').attr('value') != '') {
  		params['timeBefore'] = $('#date').val();
  	}
  	console.log(params);
  	$.get('/filter', params, function(data) {
  		populate_content(data);
  		$('.iframe').fancybox({
  