When? - Collaborative Web Search: Who, What, Where, When, and Why - page 59

QnA site was 2 hours and 52 minutes. Hsieh and Counts also reported that 20% of questions posted
to Live QnA never received an answer at all. But intrinsic and extrinsic rewards for participating
appear to encourage faster, higher quality responses ( Raban and Harper , 2008 ). Even something as
simple as how collaborators are portrayed or how information needs are expressed across participants
may be important. In the next chapter, we look at why people collaborate on search tasks. This gives
us further insight into how we might incentivize faster and more active participation.