in reply to Knowing when nodes are updated
I'm not against such an option (it would be neat and I'd use it for minor updates that didn't just fix typos). But I'd rather have people follow-up to their own nodes rather than make a major update to an existing node. Or if the motivation behind the update was some other node, then follow-up to the motivating node and update your old node to include a link to your new node.
One exception might be possible long-lived nodes like one holding the source code for the Tk Chatterbox client, for example.- tye (but my friends call me "Tye")