It seems common sense to me that if the tip writer could actualy identify shares that would do well he would invest his own money in them, make a fortune and retire to the South of France or somewhere. In reality the tipster knows no more than the rest of us which is why his results are random and he is tipping for a living rather than investing. There is quite a lot of truth in the Efficient Market Hypothesis, that share history and prospects have been thoroughly analysed by experts and everything known about the company is in today's price. Prices will continue to move in the future but only in response to unpredictable news and events. On that basis any share is as likely to go down as up and there is no sure way to pick future winners.