Great web sites that are addictive ?

Looking at health care question ( Canada - vs - USA ) reminded me of a couple of web sites that are great for clarifying hard issues ...

web sites that are additive

http://www.ted.com

and

http://www.gapminder.org
the fellow from Sweden who has the great bubble charts

Both talk about world health care ... kill two hours

Have a look

Greg

additive or addictive?

Tug is addictive to me.