I'm going to keep an eye on mediageek.org.
A large collection of chinese propaganda, via girlhacker. No reference to propaganda art is complete without a link to posters from the Spanish Civil War. And speaking of propaganda, wow! Also: a huge collection of public murals in LA, via randomwalks.
A couple of good aphorisms (link via Daily Chump):
The relationship between truth and a newspaper is like the relationship between the color green and the number seven. Occasionally you will see the number seven written in green, but you learn not to expect this.
It is easier to fight for one's principles than to live up to them.
Subtlety is the art of saying what you think and getting out of the way before it is understood.