NEW YORK (The Deal) -- A seemingly innocuous settlement between the Federal Trade Commission and activist fund manager Third Point's Dan Loeb didn't receive much notice, in part because the insurgent fund manager didn't have to pay any monetary penalties. Nevertheless, the agreement, which resulted from Third Point's 2011 campaign at Yahoo! , has privately set off warning bells among some activist fund managers and their legal advisers, who argue the regulatory move will chill insurgents and their efforts to drive changes and improve share prices at targeted companies.