Hmm. Thanks for the feedback. I didn't think that what I was doing was a problem. Check out Daring Fireball, Shawn Blanc, Brooks Review, and Hypertext.
My linked posts are distinguished from my articles by several features:
1. The linked titles are in the same format as any other link -- blue font with a dotted underline.
2. There is a right arrow at the end of every linked title, signifying that the title is an outbound link.
3. Most linked items start immediately with a block quote pulled from the original article, preceded by the author's name
4. Articles are in a larger font and could not be confused with a linked-list-item.