'Bookmark me' links for WP Posts ?

I've come across several Blogs using small 'Bookmark me' icons for each post, like the one shown in the image below.



I just wanted to know if theres a plugin for this, or do we have to write code and add it to the blog posts ?

(Adding it to CMS Blogging, as I feel this is the appropriate place)

 

I use this pluging
http://www.twistermc.com/shake/wordpress-social.php

It creates a dropdown box which i think looks better than the icons and means you can add a lot of social bookmarking services without cluuering the page.

 

Thank You stOx

Thats what I was looking for

 

I think this is what you are looking for...No drop menus..

 

very good plugin, im using it but i don't want to "over do " my blog :|