I disagree, belg4mit.

I don't check here very often, so "Newest nodes" are too ephemeral for me.

Unless someone has replied to one of my nodes, how can I know the discussion has been updated?

If we had a "subscribe to this node for update notifications" feature, then I'd agree that 1.1-style notices should go in as replies to the old node, but as the site stands, I'm glad that update was a top-level node, where I'm more likely to see it.

That being said, I still ++'d your node, it seems like a reasonable point to discuss. It's a bit odd that it stands at -7 XP atm, but I understand we all have very different up/downvote criteria...
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Mike