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21 Lists - Send and receive targeted, paid microtasks
CoinArbitrage - Crypto Currency Price Monitor in Real time with Alerts and Notification through email, sms, Desktop Notifications Instantly and watch all of your assets and coins in one place with 16 Exchanges, 6500+ Coin (bitcoin, etherum, dogecoin,litecoin,ripple)
Bitbounce - Charge unsolicited email senders a cryptocurrency fee
BitInfoCharts - Price, reward, difficulty, hashrate, market capitalization, block time, blocks count for all the...
BitcoinGet - Earn bitcoin by completing tasks, answering surveys, watching videos, and more.
Coinranking.com - A mobile-friendly list of cryptocurrencies.