According to MacRumors several members of their site have been asked, via email, to join a new customer feedback program called Apple Customer Pulse.
Apple values your opinion and invites you to participate in a survey about your Apple products. Your responses will remain completely confidential, and results will be viewed only in aggregate. The survey should take five minutes or less to complete.- MacRumors
Users, once signed up, have a username, profile, and "posts." The service is provided by "Socratic Technolgies, a San Francisco-based market research firm that has worked with other tech companies such as Adobe to gather customer input," according to MacRumors. The AppleCustomerPulse.com domain name was registered in late january and appears to be running off of Socratic's servers and not Apples.
Have any Modmyi users been invited to participate in the Pulse program?
It seems to be invite only right now, as any attempts to click on the "would you like to join" link just opens a broken page.
Sources: MacRumors and Apple Customer Pulse