How do search engines deal with AngularJS applications?

Question

I see two issues with AngularJS application regarding search engines and SEO:

1) What happens with custom tags? Do search engines ignore the whole content within tho

Answer 1

Things have changed quite a bit since this question was asked. There are now options to let Google index your AngularJS site. The easiest option I found was to use http://prerender.io free service that will generate the crwalable pages for you and serve that to the search engines. It is supported on almost all server side web platforms. I have recently started using them and the support is excellent too.

I do not have any affiliation with them, this is coming from a happy user.