I don't know anything about the news letter. Could be helping with the volume. Personally I doubt it is operational news, just some unusual activity around the dividend gets the momentum traders going and then people like moroko with ambitious limit orders. Then the momentum stops and the formerly buying traders start fleeing. Moroko buys back in.
At this moment about 95,000 shares have been traded. Is it that many shares or is the same shares getting passed around?