Quora Users Share Secret Acts of Kindness

In an era in which online discussion boards can sometimes become contentious cesspools of bickering or breeding grounds for misinformed political rantings, it's refreshing when an online forum becomes positive and inspirational.

A thread on question-and-answer site Quora is asking the question: "What is the nicest thing you've ever done that no one knows about?" So far, the question has generated more than 200 responses from users sharing stories of their anonymous acts of kindness, some of which are highlighted in the video above.

Currently, the top response on the site is from an anonymous user who sold a tech company in 2010 and then drained his or her bank account to buy his or her wheelchair-bound father a one-story house in Texas.