Yesterday, via the web hosting blog, I posted about a snipit of code I found useful when putting ads right where I need them.  One of the more difficult tasks to do with WordPress is to put the ads between the posts on the main page.  With this code though, it made the process really easy (so I wanted to share):

Better AdSense Optimization with WordPress

and for those of you who like the plugin route, we got a good comment/suggestion for this:

http://code.openx.org/projects/show/advertising-manager

Personally though, if I don't HAVE to use a plugin, I'd rather not.