Michael Henke

This plugin is including the Flattr button for your blog inside a widget. 
This way the button can be easily positioned in any of your themes sidebars.
Your flatter credentials are all automagically imported from the official Flattr plugin.

Flattr Widget

This plugin is including the Flattr button for your blog inside a widget.

zhenech

With Sexy RSS Footer you can add everything you want to the end of every feed entry. 
Backlink to the site? Sure. 
Number of comments? Sure. 
Flattr link? Sure. 
Something totaly different? Yepp, even that!
Suggestions for more replacement variables highly welcome!

Sexy RSS Footer

Sexy RSS Footer enables you to add any possible content at the end of every feed entry. This includes variables like number of comments, author etc.

Flattr Widget vs Sexy RSS Footer