We are developing Yii-based applications since Dec'11. In 4.5 months, two projects has already been released:
piyasa.com in Jan'12 (piyasa means "market" in Turkish) and
ikinciel.com -Alpha version- in Apr'12 (ikinciel means "secondhand" in Turkish)
Yii is a powerful, easy-learning, and stable framework and I wanna thank all YiiTeam members and contributors.