This is a good way of getting tips. If you are good with sportbetting prediction , lots of people will follow you and check your tips regularly. It would get more attention if it is free and just put a donation address for some tips. Most people will more likely to tips you everytime they win with your prediction, or you can create a forum with vip level where you will send out your tips. This way it will give you more income because of their subscription.
It may sounds good but it is not easy to achieve. First you need to build a reputation and that means you need to bet and show people that you can earn from your own prediction. Then there are so many people that can do it too so you need to think of ways on how to outshine them so they can pay for your tips and not the others. And just rely on the tips are not sufficient to be profitable also, so in the end you still need to use your own money to take the first step.
Gambling tipster proven as a good role and should get big profits as they are mastered the game and should proof their earn from gambling.
I think it's rather difficult to do if you don't know how to win the game and mostly people lost in the long run but you can start where you like to pay attention such as soccer, tennis, etc.
The easiest way to turn it into profitable by following good tipster, some people already share their prediction about the game and you can earn profits there.