--- twitter-tools.php.old	2009-02-26 16:12:44.000000000 -0600
+++ twitter-tools.php	2009-02-27 15:42:07.000000000 -0600
@@ -143,6 +143,7 @@
 			, 'js_lib'
 			, 'digest_tweet_order'
 			, 'notify_twitter_default'
+			, 'extra_query_args'
 		);
 		$this->twitter_username = '';
 		$this->twitter_password = '';
@@ -175,6 +176,7 @@
 		$this->doing_tweet_download = '0';
 		$this->doing_digest_post = '0';
 		$this->version = '1.6';
+		$this->extra_query_args = '?utm_source=twitter&utm_medium=twitter&utm_campaign=twitter';
 	}
 	
 	function upgrade() {
@@ -464,6 +466,7 @@
 		}
 		$tweet = new aktt_tweet;
 		$url = apply_filters('tweet_blog_post_url', get_permalink($post_id));
+		$url = $url . $this->extra_query_args;
 		$tweet->tw_text = sprintf(__($this->tweet_format, 'twitter-tools'), $post->post_title, $url);
 		$this->do_tweet($tweet);
 		add_post_meta($post_id, 'aktt_tweeted', '1', true);
@@ -1577,6 +1580,11 @@
 							<select name="aktt_notify_twitter_default" id="aktt_notify_twitter_default">'.$notify_twitter_default_options.'</select><span>'							.__('Also determines tweeting for posting via XML-RPC', 'twitter-tools').'</span>
 						</div>
 						<div class="option">
+							<label for="aktt_extra_query_args">'.__('Text to tag on the end of URLs in generated tweets', 'twitter-tools').'</label>
+							<input type="text" size="30" name="aktt_extra_query_args" id="aktt_extra_query_args" value="'.$aktt->extra_query_args.'" />
+							<span>'.__('Include the leading ? before query args', 'twitter-tools').'</span>
+						</div>
+						<div class="option">
 							<label for="aktt_create_blog_posts">'.__('Create a blog post from each of your tweets?', 'twitter-tools').'</label>
 							<select name="aktt_create_blog_posts" id="aktt_create_blog_posts">'.$create_blog_posts_options.'</select>
 						</div>