Ist bitbucks.com sicher?

Hi. I am the creator of this site, so my comment is likely a little biased. My goal with BitBucks was to create a website that is simple and minimalistic yet useful and trustworthy. With the newest update, I have installed optional Facebook user authentication, as a means of preventing duplicate offer completions and -fraud. The process is entirely optional and no personal information is collected or stored. I'm currently working on a FAQ/knowledge-base component that may assist new users in learning how to use the site and how the system works. If users have any questions, suggestions or comments, I can be contacted through the support-email (which can be found at the bottom of the site).