Who’s been tagging the former Malloy’s Register Company building at the corner of Polk St. and St. Emanuel St. in East Downtown with Simpsons graffiti, an assortment of wheatpaste posters, and a TABC license application? The building’s future tenants, who bear the mysterious name The Secret Group. For now, The Secret Group has been arranging and promoting a series of comedy and music performances in various spots around town. But come November, the promoters plan to open up their own native bar, comedy club, and music venue in the building at 2101 Polk St.