PluraProcessing.com pays site owners to farm out computations to their clients. According to PP, site owners can make about $2.60/month/user. The major catch

PluraProcessing.com pays site owners to farm out computations to their clients. According to PP, site owners can make about $2.60/month/user. The major catch is that the system only works well when visitors have long visit durations (e.g. web-based video games). I presume PP necessitates long visit-durations because short visits won't yield enough computational resources to make computations economical.