WCONLINE includes a post-session, anonymous survey that can be used to solicit and collect feedback from your clients. The survey can be administered a variety of different ways--including by being emailed to clients automatically immediately after their sessions. And, the data is truly anonymous, which allows clients to access the survey and provide their thoughts without having to log in to WCONLINE.
The survey is configured via Module Setup: Survey. That control panel is available under the "System Configuration" section of the Welcome menu, and is typically available to full administrators only. Within that control panel, you can define the questions asked on the survey, as well as how the survey is presented to your clients.