Hello there! I personally believe the answer will be:
the contents of a new textbook
The other ones seemed rather informal. Weekend plans with friends have no formality at all. As do the places to shop online for new shoes. The last one could be a candidate but it seems like something you would talk about with a friend or family member. Not so much your boss!
Hope this helped!
The most obvious difference is that academic writing is nonfiction, while entertainment writing is fiction.
Answer:
No, should not be, for the reason being on typo's or (AFK) away from keyboard hijackers, posting on someone elses social media accounts.