It is not surprising in today’s economic environment that CryptoTab PC mining is not as profitable as it was, however there are ways of maximising your income by other means Source: How to earn 1000 dollars per day with CryptoTab PC mining
Once you have downloaded the CryptoTab miner you are ready to go. The amount you will earn depends on various factors including the size and speed of your computer and how often you are using it. Source: How much can you earn from CryptoTab mining per day?