Neat! This just helped me find out the name of the weather site I was trying to remember on Saturday (http://weatherspark.com). I knew it'd been on HN but searchyc.com returned too many results in this case:
It's interesting how accurate the tags are and how much more information they give. I've been playing with them for a while and I can sit and browse for hours.
http://archfinch.com/tag/hn/weather (result #3, "Incredible weather information UI")
http://searchyc.com/weather
Thanks!