These coffee shops have taken the art of the chalkboard to a whole new level - but it's probably best not to mention Starbucks YOU might think chalk boards outside coffee shops are all about ...

You can’t move these days for witty sayings and inspirational quotes placed outside independent coffee shops and strangely named bars full of bearded hipsters, tiny furniture and brioche.

As Foursquare becomes more and more popular, so is the sidewalk chalkboard sign beckoning Foursquare users into the local coffee shop or bar and hailing the store's current Mayor. While the ...