A controversial online betting site called InTrade abruptly shut down on Sunday, according to a memo posted by its board of directors. The Irish-based service allowed gamblers to bet on political races and other event outcomes. It was sued in November by a U.S. regulator, and was blocked for U.S.-based users. The enigmatic memo cites “circumstances recently discovered” that “may include financial irregularities” as cause for requiring “immediate further investigation.” It appears they might not be gone forever, though. The memo ends by saying, “[We] hope you will bear with us as we do all we can to resume operations as promptly as possible.” Who wants to bet?