I liked using the old Flylab for free. Why did you decide to charge for it?
There were two compelling reasons for going to a commercial site hosted by Pearson Education. First, maintaining the existing site is a huge drain of time and resources. To handle the traffic (which has more than doubled each year) there are six servers on-line now, with three more on order. With no revenue coming in on the free version, the university keeps spending money just to maintain the status quo and could not continue to do so. Second, working with a commercial partner has given the CSU access to resources which has allowed the development of additional modules. In addition to the new Java version of FlyLab, we now have DemographyLab, PedigreeLab, EvolutionLab, HemoglobinLab, TranslationLab, MitochondriaLab; LeafLab, CardioLab, EnzymeLab, PopulationGeneticsLab, and PopulationEcologyLab.