I have tried it before and I lost. I won't try it again. What actually happened was I just saw a tipster thread and based on the previous prediction that the person has suggested which happen to be correct, I just went in when it was obvious I haven't heard about the teams playing before. I lost woefully and since then I won't put my money in such again.
The experience makes man perfect. This is a perfect example for this topic. If you do betting on sports that you don't know just based on tipster suggestion, this is the result we got in the end. So don't try your luck with others knowledge, try to learn games through other source and improve your knowledge and do betting the result will be good.