Free advertising

I've noticed a trend to put an advert on a bike and then padlock the bike to railings. There's a bike repair shop in Glasgow that has old bikes shackled to bike racks in the city centre with all the details of their shop on it. This one is for the Shimmy Club, Records and Dancing. Never heard of the Shimmy Club. Maybe I should look it up, maybe I shouldn't.....
Since I put up this blip I googled the Shimmy Club and this is what I found obviously not the fun shot I intended....