I think I found it out by watching the tips in the chatbox. I checked the people who are being tipped by one gambler and the names are just the same whoever in their group will give a tip after a win. Obviously, they have some cult (kidding) group out there that is specialized for just them and most of them are high-ranking VIPs which means their wager amounts are not a joke.
Although I doubt they will just share whatever picks they have. Maybe once a day and you will be lucky enough to catch their shared bet of the day. I once caught a shared parlay and it gave me the win but I didn't bet much so I didn't feel the profit. Upon checking the parlay again, it's an obvious safe bet for favorites with just 2.xx odds.
But don't try to get or buy these tips because many people are providing fake tips and may trick you.
Many scammers within the world of sport betting, indeed. They pose as insiders and tipsters and ask money upfront. In my personal point of view, if one is looking for tipsters, it would be better just to go with those who claim to have time within the sportbetting community and are willing to proove it with free tips, as a way to help their community.
Actually, there have been some users who have opened threads in this section offering tips for free while saying just to follow them at our own risk. It is better than falling for a scam, in my opinion.