Difference between #4 and #3 of Links to Yii FAQs on the web

While this is not a wiki article about a specific Yii topic, here is the list
with more Yii FAQs:

-
[stackoverflow.com](http://stackoverflow.com/questions/tagged/yii?sort=votes&pagesize=30
"Yii Tagged Questions - stackoverflow.com") (700+ questions)
- [YiiAnswers.com](http://yiianswers.com/)
- [Yii Articles on Diggin'
Data](http://www.diggin-data.de/website/post/index?tag=Yii) (deutsch site, 5
articles (deutsch & english), too many google ads)

>Note: Please add more links if you have some