i tested this site back in dec 2013 i made a small deposit about 0.01 btc after the 1st month i got 6% interrest then i  withdraw the btc i had no problem the thing is the month after i had no btc at bitcoinera.net and i still got btc added to my account ?? after that my account was deleted and there is no response when i send them an email... so i say its a scam ! deleted accounts and no respond from support ! the thing is the site is still live now 27-05-2014 so watch out !