http://www.earncrypto.com/earn-free-bitcoin/?r=2197
http://www.gambit.com/?ref=John1111
http://bittoclick.com/?ref=john1111
http://freebitcoinz.com/r/btc4u
https://cex.io/r/1/john1111/0/
http://freebitco.in/?r=198222
used these sites and got 0.05 btc in a month