[soseng]

I work in Liferay Portal and AUI, which is a fork of YUI. Liferay will probably be impacted greatly by this. My company has done a few large scale Enterprise application implementations in recent years and continue to do more Liferay work (It's actually booming). YUI is a huge framework and not just a library. It contains a lot of neat UI Components and Utilities. Although styling the components and making them responsive always seemed tough.

[smrtinsert]

AUI is kind of screwed. I remember it looking like an intentionally leaky abstraction of YUI. I would have used it had it not exposed so much in YUI.

Liferay, meh they seem break stuff with every new release anyway :)