Its a case of Caveat Emptor, which from the Latin effectively means let the buyer beware, or you take it at your own risk. Even though advice or tips offered are effectively free, there is no way of knowing that they will work effectively or not cause some other problem. So you make a good point. TBH theres no such thing as a free lunch, you do as please and risk the consequences, and of course if it sounds too good to be true then it probably is just that.
Take this advice with pinch of salt though
