scibuff

The Twitter Gallery is a WordPress plugin for aggregating images/photos 
posted to twitter. The gallery script searches the public twitter feed 
for photos and images sent by users from around the world.
The initial release supports images posted to twitpic.com, yfrog.com, img.ly, flic.kr, ow.ly/i and twitgoo.com
Everyone can have a photo included in the gallery by updating his/her 
twitter status with a message that includes (one or more) images uploaded to either of the 6 services mentioned above and the twitter hash tag 
 # which is fully customizable through the administration dashboard.
Requirements
<ul>
<li>PHP 5.2.0 or newer</li>
<li>WordPress 3.0 or newer</li>
</ul>

Twitter Gallery

This plugin creates and maintains a twitter image gallery on a Wordpress page

d3wp

This plugin generates nice jQuery powered sliding contact form in the left border of your WP blog. 
Contains client side validation and ajax powered mailing, so no page refresh is required. 
Admin section allows you to configure all form labels including error messages and form status messages.
<h3>Feedback</h3>
http://www.webdev3000.com/

WD3K Ajax Sliding Contact Form

An Ajax powered sliding contact form, based on Contactable (jQuery Plugin) By Philip Beel.

Twitter Gallery vs WD3K Ajax Sliding Contact Form