In light of 2011 wrapping up the way it did, I got back and gathered my thoughts. It's been a while, I admit. Whichever we blame it on, it was good to put things back in perspective.
"A public service announcement (PSA) or public service ad is a type of advertisement featured on television, radio, print or other media. Whereas the objective of a standard advertisement is to market a product, a PSA is intended to change the public interest, by raising awareness of an issue, affecting public attitudes, and potentially stimulating action."