If you do firefox and a picture person, then you must have some place to save your pictures on net. Right now the most popular online image storage system is flickr. But anyway, let's come to the point -

PicLens is a firefox extension which will change the way you watch picture albums on the web.

PicLens is currently works on:

* Flickr, Smugmug, DeviantArt, Photobucket, Picasa, FotoTime, Fotki
* Facebook, MySpace, Bebo, Hi5, Friendster
* Image search on Google, Yahoo, Ask, Live, and AOL
* A growing number of Media RSS-enabled web sites

Don't trust me ? Try it yourself.
Visit for add-on details - https://addons.mozilla.org/en-US/firefox/addon/5579
Homepage for PicLens - http://www.piclens.com/site/firefox/win/