Great plugin My first request is in regards to timthumb.
I've been able to patch the code to not use timthumb and the results are pretty clean. I think timthumb should be optional and the following strategy should be used instead in images.php:
$src = wp_get_attachment_image_src(get_post_thumbnail_id($attachment->ID), array($width,$height) );
$thumbnail = $src
This works well for me since my theme has a lot of different thumbnail sizes registered. The result is a lot less resources being used and better security.
Also in the Google Maps shortcode is there a way to support passing in a manual name for the address?