The common question / thread I'm always looking to answer is "whats currently at the bleeding edge", and I've found it hard to do this efficiently without guidance from someone in the field.
A quick google search turned up a few resources, but would love to know what HN uses, or what you guys think about this.
http://www.myjournals.org/ http://www.tripdatabase.com/ http://www.alphagalileo.org/