If you want to embed a Flickr flash slideshow in your blog just use this:
<div align=center>
<iframe src="http://www.flickr.com/slideShow/index.gne?tags=ubuntu" align="middle" frameborder="0" height="500" scrolling="no" width="500"></iframe>
</div>
just replace "tags=ubuntu" with a tag of your own choosing.
Here it is in action:
