"It adds an element of peer-pressure to hopefully make a person feel they have to move a sticky note every few days."

Personally, I would remove that sentence: it smells very un-Agile. The sticky gets moved when the work is done, period. Peer-pressure isn't going to make a professional developer work any harder (nor will not-so-subtle hints from management). Being patronized may, however, annoy the developer enough to slow him down. Just my opinion.