Seems like some Yahoo! Publisher Network publishers aren't satisfied with their YPN checks, they need to take the survey YPN is offering for pay. Or maybe they are just money hungry. :) Yahoo! is paying publishers between $15 and $50 to complete an online survey, more details here. Some said it is the easiest money they ever made. The survey says it will take about 30 minutes to complete, so you got to see if it worth your time.
Forum discussion DigitalPoint Forums.