Thanks to everyone who commented on subscriptions. I spent the past few hours working on the system, and now you can subscribe to a particular post and get notifications when comments are added. Still need to write the code to allow for notifications of updates, but it's almost time for bed.
So, please do me a favor. Subscribe to this post and let me know if you get emails regarding updates. Let me know if it shows up in your spam folders (gmail is notorious for blocking stuff). Feel free to unsubscribe as well, you can always sign back up with another comment.
Update – I've added notification for updated posts. Everyone should get notified who's subscribed to this. Let me know if you don't.