Survey company offerings vary a lot by level of training and specialty, but several do offer bonuses to all comers for signing up (or when you attempt a survey or two):

• All Global Circle is offering $50
• InCrowd is offering $10

I maintain an up-to-date list of healthcare survey companies here. Some of those links are also referrals that help support this site–so if signing up meets your needs/desires, thank you for supporting my writing.