That is kinda nifty. I don't think I'll frequent it, but it's a good resource to hold on to for future reference and for helping people learning CSS to see what they can and cannot do in what browsers and what versions.
Who can bring a charge to God's elect? It is God who justifies!
Stumbled on this nifty chart which details which CSS functions are supported ...by browser and version number.
http://centricle.com/ref/css/filters/