Creating PowerPoint presentations is all about design. 
The COLORBURNED blog author shared the content of his RSS reader in this post with a list of 127 RSS feeds "that all designers should subscribe to" (the comments add a few more).
Not sure whether I will do that, but it does provide some good weekend reading.

If you liked this post, why not subscribe to daily updates about presentation design via email? Just blog posts, no spam, or you can follow Jan on Twitter to never miss a thing.