A few nice Network advertising images I found:
bands, babysitters, and backrubs: community bulletin board
Image by woodleywonderworks
Who needs twitter when you have an old fashioned community bulletin board? This one comes from the Brick Store in Bath, New Hampshire. Everything you need to know in less than 140 postings.
Power Puff Girls Rule
Image by Calsidyrose
From a Golden Book "Mini-Mag" published in 2000.