I use it personally. It's plays the same role as php-fpm, but it's better (I think) and can be used with python, php, ruby and cgi. I need to update the wiki because the instructions are not correct.
Alright, I see, thanks. Concerning the wiki update, please do so. I'm currently struggling to set up properly ownCloud with nginx, it's been quite a nightmare for the past few days. I'm also keeping my installation notes in Markdown so as to maybe (if I ever manage to get it running) use it as a base for a dedicated LEMP/ownCloud page on the wiki.
I don't know if it should go in opt-deps. There are a lot of web servers and application servers, I'm not sure we should put them all. pacman misses categories, like "needs a web server".
Sergej Pupykin just uploaded an updated owncloud package to [community], by doing so closing bug FS#41381 I had opened (many thanks to him). Seems like he didn't include php-fpm.