Personal information (trivia) in the “about me” section of an academic webpage
So far, none of the other answers have mentioned Security.

Personal information, such as What is the name of your first pet, is used by many online account recovery mechanisms.

Many accounts have been hacked using such personal information:


  The following profile elements can be used to steal or misappropriate
  your identity:
  
  
  Full name (particularly your middle name)
  Date of birth (often required)
  Home town
  Relationship status
  School locations and graduation dates
  Pet names
  Other affiliations, interests and hobbies
  


...


  Best Practices
  
  
  Assuming you plan to be active in social media, minimize the use of personal information on your profiles that may be used for password
  verification or phishing attacks.
  Avoid listing the following information publicly: date of birth, hometown, home address, year of high school or college graduation,
  primary e-mail address.
  


Secrets, Lies, and Account Recovery:
Lessons from the Use of Personal Knowledge Questions at Google:


  Publicly available answers.
  
  Rabkin found that 16% of questions had answers routinely listed
  publicly in online social-networking profiles. 
  
  Even if users keep data private on social networks, inference attacks
  enable approximating sensitive information from a user’s friends.


So think very carefully before publically exposing personal information.