I think the problem is that it's hard to differentiate between good and bad use. Hard for those looking for the abuse and those trying not to abuse and knowing where the line is. But how you did here, linking to the previous post, may be the best approach. For a while I had a "greatest hits" list of links at the bottom of my articles. Now that I'm using a template for my posts (whenever I think of it) I should probably add that section back to my template.
... oh and yes, it does hurt SEO to have search engines find duplicates for an article.
Yeah, I figured it was bad for seo due to that, but it is kind of silly in a world of syndication.