I'm sure there has to be a tutorial for this, I just can't find it. I'm also pretty confident there's numerous ways to do this and I'm looking for the best. I've never had to do this before, so I've never asked...
I want to insert a DIV into a list of excerpts. For example, take a look at: http://www.premiumpixels.com/wordpress-themes/ where Orman added a div asking users to subscribe into his excerpts.