I must disagree. There are other ways to deal with such problems. For instance, some companies do not allow their employees to trade in a stock until three days after the recommendation is made. I actually think Agora's overcautious position has more to do with some problem that Agora had with the SEC years ago.
Tmf1955 - "Agora's position on writers, researchers investing in the stocks they recommend, is actually a good one. Prevents manipulation of the share price to the writers advantage."