I'm not sure if there are any public payday loan companies.
CSH is CashAmerica, which is that franchise, Cash Land, and Pay Day Advance, EZCP owns the EZMoney franchise, JGW is JG Wentworth and Peachtree, FCFS is First Cash Pawn Shops... there are a few others.
They've been in a tough bit recently, as states change laws on them, forcing them to restructure and reorganize locally often, but they can be profitable. Not many are clear to operate in every state, so they all divide up different territories. It's not a clearly great investment opportunity as the legal landscape they operate in changes quickly.
I've looked into tipping a toe in this area of investment, but haven't yet.
Otherwise, though, despite the high management fees, I still like VICEX, which is the Vice Mutual Fund, which invests only in "bad things". A lot of tobacco companies, casinos, and defense contractors. I've held it for a while and have had some nice returns.