I agree with Teresa. I have also seen an increase in earnings and traffic since joining the Apprenticeship in March.
My HubPages earnings doubled in March and increased significantly in April. Incidentally, this does NOT include the additional bonus program for being in the program. The bonus is an added benefit.
I highly recommend the program. Don't get discouraged if you are on a waiting list or are asked to reapply. It is definitely worth the wait.