I have been using a very simple Flickr Thumbnail Widget (its written by James Carppe of squible.com and is v1.2). I am not sure how I got this plugin, I don't see it on Plugins directory here and the author website has no mention of it. May be its the default widget that comes with WP!!
Ok, so I actually wanted to enhance this widget so that you could show the thumbnails in a grid form rather than just horizontal form. My question is: how do I share this with all? Can I add this as a new plugin?