Since the introduction of the "you are here" collection, no one wants to collect the Starbucks mugs anymore. The new collection is ugly, and most of all, not tourist friendly.
Imagine: You're a collector from Europe, and finally you are going on a holiday to the US. You have a large collection of '08 city mugs, and want to buy more in the US. The new collection discourages this. Because the "you are here" collection is only available in the US, the mugs won't fit to the collection of '08 mugs bought at other continents. The sales will drop, and less mugs sold, means less taxes.
Please stop the "you are here" collection while it's still possible.