Walker is also the owner of Cyberwalker.com [1], a technology advice website, and the author of The Absolute Beginner's Guide to Security, Spam, Spyware and Viruses and Windows Vista Help Desk both from Que Books.

In December 2013, Walker announced[1] he had signed deal with Pearson Education to write his 5th book called Super You: How Technology is Revolutionizing What it Means to Be Human.

[2] On August 31, 2005, after hosting Call for Help with Leo Laporte for over a year, Walker announced that he was leaving the show due to an unsatisfactory pay cut in his proposed contract renewal.

Walker's community service includes founder of the Little Geeks Foundation, a national Canadian non-profit charity that provides computers to school children from families in need.

Walker also serves as a technology advisor to His Honour David Onley on his aboriginal children literacy initiative.