Depends on what is suitable for you. If you want to earn a good and decent amount then invest in trading and start doing it but first you have to learn about the market. Rewards of mostly Signature campaigns are not too high and you will need to work hard to earn through out the week, however few campaigns are rewarding handsome amount to the participants. Mostly of the users(including me) are doing both because these are not interrelated to each other and there isn't any effect of one work over other.