And just found a forum that is built on IDN: www.פורום-קידום-אתרים.com
the actual forum page: http://פורום-קידום-אתרים.com/viewforum.php?f=2
(Translates to Forum-Advancing-Sites) makes more sense in Hebrew, something like SEOForum in English...+the hyphens...
There's also that school which is still on the top spot in google for SEO Course (קורס קידום אתרים)
Even today's holiday wishes come with IDN's :D (Attached)
This is a first for me: http://פורום-קידום-אתרים.com/viewtopic.php?f=2&t=407
One guy is asking: I see the url here is in Hebrew, what's with that new thing? Are Hebrew names better for SEO? So he got one reply telling him: Yeah, Hebrew names are better for SEO...