Yes, 2 accounts only. The title of this thread is too much for me i think, well in fact the realistic income for this is just extra $10-$20 a day without referral but you must write a good review and it will take time seriously and if you are a music lover and love to write reviews then go for it but believe me its hard to hit the $50-$100 day in my case.
1cent if your review is not quality. Try do some research on how to write quality reviews and apply and see the result for yourself.
The $100/day for this method only achievable if you have a lots of referral otherwise $10-$30/day is more realistic.
Best,
wk