I always thought the problem with this is by time you get the pick sent to you, the price has already moved. Of course, i was mainly looking at penny stocks because i wanted to go for the kill and didn't have the kind of $$ to buy alot of shares at say $40 and make money that way.
But in my limited experience with this a few years ago, sure you will get a nice tip from these guys but they are sending it out to everyone and by time you get in, the price moves up before you buy and sometimes it just moves up temporarily because this service is pumping it and everyone is buying. I always thought it was kinda of a scam and this company could just pay some of these sites to pump their stock.