Something kind of like self expression, or more simply, just a matter of taste.

 

“As fears of a euro meltdown continue apace, a guerrilla war of Post-it note art has broken out in office spaces across corporate Paris.

The first shot was fired four months ago, when employees at French computer gaming company  Ubisoft  – maker of the popular  ”Tom Clancy’s Splinter Cell”  and  ”Ghost Recon”  game series – put up a Post-it note image from the 1980s classic “Space Invaders” on the window.”

Full article here : http://business.blogs.cnn.com/2011/09/28/post-it-note-wars-rage-in-paris/?iref=obinsite

See more Post It art here : http://www.postitwar.com/