Pity the folks who bought into timeshares - they are ripe targets for scam artists, my colleague Randy Furst reported in Sunday's Whistleblower column. It seems the swindlers think of timeshare owners as the gifts that keep on giving. The get-rich-quick infomercial pitchmen are also getting some unwanted federal scrutiny, we report in the On Your Side column. The Federal Trade Commission doesn't buy the claims of the Cash Flow Business that its participants can earn $1.2 million in 30 days brokering promissory notes. Also Sunday, Hard Data columnist Jane Friedmann lists St. Paul restaurants with the highest number of critical violations in the first three months of 2011, according to city health inspectors.