It can be good because you know many places to earn, the bad thing is that maybe you have too many places to work and you can neglect others, but well this really depends on the person and how organized they are.Now I realise that it's better to focus on many sites and earn $0.25 from each site than to focus on one site. I have started following this rule. When I find nothing interesting on a site I switch on to the other site and then I come back to the previous one when finding the later one not interesting.