Being scammed in one way or another seems inevitable, what are the clear indicators that a legit-looking service is actually a big scam of some sorts? Is this forum a good place for info to detect a fraudulent scheme?
Just compare the usual things to abnormal things to find out whether it is a scam or not. Usually I do identify scams by analyzing their income generation procedures. If I find anything abnormal then I will avoid them completely.
When you are not able to understand a business model, just stay away.