Like sfk, I don't think its popularity makes it any more valid, though similarly I also don't mean to single you out. Linking and sharing information is undoubtedly one of the foundations of the internet, but at the same time identity/anonymity is important. Backtype provides an interesting consumer service, but at the same time its plugin is destructive to maintenance of identity.

If you're drawing from HN, separate it clearly from the comments left on at your blog and somehow summarize, emulate, or eliminate threads. Otherwise it's damaging to all around.