Should I pay $50 for a positive App review?
bisi: There is no right way or wrong way in business . There is only one way - The way that makes money ..If I told that I paid $50 to a review site and it brought me $5000 . Will you ask anybody if you should pay $50 to bring in $5000 ?Big Corporation pay celebrities money to give favourable reviews and endorsments all the time . Nike will only pay Tiger Woods Millions to give a good endorsement . They would be fools to give Tiger Millions to give his honest opinion . Its business .. The only way you will make money from your products or service is to get good reviews . If you are asking people for reviews and they are giving you bad reviews you will never make money .. This is part of marketing .. 
Your number one goal in buisness should be to make money .. If you will lose the $50 then its not a good investment but if you will make money then thats pretty much all that matters .. THERE IS NO CRIME BEING COMMITED.
Its just business ..