Here are some links that I find useful.

Gibson Research Corporation
Gibson Research Corporation is where Steve Gibson has made a lot of his work publicly available, and the home of; SpinRite, ShieldsUP! and last but not least SecurityNow!
Google is my preferred search engine.
Rackspace is the cloud service provider that I use. - The Type Hierarchy
Full list of schemas from
W3C HTML 5.1
W3C Working Draft of HTML 5.1
Wolframalpha is a unique analytical engine that can find and process data avaialble to it, and give you information as a result. You can do interesting things like ask it to plot the pressure and temperature uisng today's data for a given location.

Wolfram|Alpha: pressure, temperature Columbia MO today