Sorry if you do not agree with me, but trying to earn money from microtasking did not gain me money but only made my social media accounts flagged for spamming. (By the way, I used only alternative accounts because I already had my suspicions from the beginning). The background image of the onfocoin.com homepage looks like socialist-themed, and that turns me off. Lastly, the registration page only allows you to register using either Facebook, LinkedIn, vKontakte, and Coinbase, all of which are not only non-anonymous but also data-hungry companies. As far as I am concerned, I would never want to break my anonymity for something that is not almost completely safe for my privacy.
Again, sorry if you do not agree with me. I am not saying that onfocoin.com is bad, since I have never tried it yet. However, please be warned.
It is your choice, it's fine.