Thank you for your response Leonid. 

What I meant by pages is e.g. in Facebook context, I can create pages as website user (as UNA user) and people can follow it. So I may create page for particular brand or vehicle or person or company. Then people can search it, subscribe it. Whenever I update or post the content on that page, people who have liked it or subscribed the page, gets updates.  People can even comment or discuss on that page of particular post. So essentially it is like a Personal page, but operated by Owner. 

Hope I'm more clear now and sorry for the confusion caused by pages keyword I used as I totally forgot we have Pages App too.