is it a good thing to do tasks of paid to signup in donkeymails?

Donkeymails is a good earning site, but not for signups : you are paid only after they have been paid and the percentage of success is low. A site offering you $25 to join is probably a scam and you will lose your time in it. For signups I would recommend you to join a task site like microworkers : the payout is high -- $9 -- but you can do it easily. I generally not join valuable sites with signups : I prefer to exchange a link or join under a friend's banner here. I have created a few emails for these signups that I never check, except to verify signups : they are spammed. I joined the last ones with disposable emails at mailcatch : this site has several email domains available, it is free and you have not to sign to check an email address -- in fact they are public --. As I do not want to be active in these sites, I join them with fake informations. The task givers are offering a misery -- $0.10, $0.20 -- and hope to earn soon hundredth of their investment with us : I have no scruples to deal like that with them.