Skybtc is a new PTC website. From where you can earn Bitcoin absolutely free by watching video, surfing ads, complete surveys.
There are no limit on direct referral earning life time. 10% commission for each ad your referral views and 5% commission when your referral buy advertising.
Minimum withdrawal amount is 50 satoshi. Payment wallet is Faucetpay and ExpressCrypto. Below 1000 satoshi payment instantly. After 1000 satoshi, you can withdraw your payment within 10 minutes.