Yahoo Group Authentication

Question

Is it possible to verify that an email address is a member of certain yahoo group? For example if user sign in with openId, can we autheticate he is member of any group?

Answer 1

No, unfortunately there is no API for Yahoo Groups.

Answer 2

Actually, there is one. But its use is restricted for non-commercial purposes only. Below is the link, if anyone is interested:

http://upcoming.yahoo.com/services/api/