Last time I went to Five Guys on Senate Street, I noticed that the adjacent storefront (in-between Five Guys and Paul's Philadelphia Eatery) was now vacant. It had been home to a hair salon for some time, though it never really caught my notice because I've never been tempted to walk into a hair salon. I guess if I had thought about it, it was only to note that the place was sort of the odd-guy-out in a building full of bars and restaurants. I'm guessing that that didn't help it any, nor did the fact that the parking lot there fills up sometimes.
What struck me about this closing was the unusually explicit real-estate listing pasted to the door, giving a full floor plan, all the building financial information and a complete profile of the neighboorhood. Certainly more than you usually see.
UPDATE 27 May 2010 -- It's now Robert Jeffrey Salon: