I'd like to point out that avoid those people that are saying they have insiders.
They actually don't have an info, common sense.. if they have, they would have use it on their own, they don't need to sell it just to let notice by the bookies.
This happened and posted few times in the forum but I think some did actually happen but still it's too risky for someone who's really not into this kind of idea.
Not only in this forum, there's a lot going on like this outside, and when I was new, I read a lot of post saying they have an inside info or they have a premium pick where they will only give if people will subscribe, they even have some kind of testimony to prove, so if you are really that easy to convince, you might fall for their too good to be true claim together with their good marketing.