This is sign that bitcoin is going mainstream and we would need to invest more as I am planning to open an exchange business in my country. I have also meet an artist to design this kind of big signboard for me. We should put bitcoin sign on every business we do. I was in a meeting last week to have discussion with owner of a boutique's management and I recommend for them to put bitcoin sign on they doors as way to outsmart they competitors. Time is coming when most of the online store are going to accept bitcoin as a means of payment.
Well, maybe the sign of bitcoin is on the way to go mainstream, but not yet mainstream... Are the boutiques legally enabled to accept bitcoin as a method of payment? If there's a doubt, they can face legal issues from the tax authorities... But I hope this is just a problem of now, and later there will be no obstacle accepting bitcoin as a legal method of payment...