I want to suggest a 2 features to articles: 
1. A checkbox that allow us to  exclude a single page for indexing. Ex: pages with contact information. Those pages should be in help center and also be available for FIN, but not for bots. With a single disallow to be added in the robots.txt is enough.
2. If you type an email or a URL, and you don't link it, when you save it's linked automatically and if you want these information to be excluded for crawlers you can't.