Hi all, I'm hoping to get some feedback from you about the feasibility of study design that I'm about to start running with my group. We're starting a data collection project where we need a group of workers to take on a series of 3-5 minute HITs spanning about five weeks. It's important for this project that we recruit people who will continue to take new HITs each week for the full period of time. We're hoping that the people we recruit will be able to spend at least 4 hours each week on our HITs, with a pay rate working out to $15/hr. We're planning to send out emails each time we release a new batch of HITs, increase the possible bonus for participation each subsequent week, and obviously accept all work done in good faith. But even with these measures, we're worried that participation may drop off after the first week or two. So, my main two questions are: Does five weeks sound like too long of a time for a select group to keep working on our HITs? Is there anything else we could do to increase the rate of people coming back week after week?