Abstract. What are the antecedents, inhibitors and catalysts to providing information and participating in mixed fee-based and free online contexts? This paper is a work in progress on the participation of about 500 “Researchers ” in the Google Answers online service. We describe the behaviour of participants in this system over a 29 month period. Even though this is a fee-based environment, and answers are “worth ” over $20 (including tips) on average, labor economics of response to price and tip alone do not paint the full picture. Non-monetary incentives, such as “star ” ratings from recipients and feedback in the form of comments account for some of the variance in participation. Descriptive and correlational findings are based on many ...