!nnovat!ve !deas

It's a growingly common sight... hm... shall I say, a growingly popular strategy :D

• The first time to see such a card was at hotels - where we hang out there "Do not disturb".... People are in fact quickminded and started to look around where such can be hung, and tap on it as an advertising strategy, to reach out to more people... Moreover, it's made such that it's easy for interested commuters to bring a copy home!
• Ah ha! Another collector's item?
• Possible! Some are so nicely designed... in the first place, the paper quality is good!