Rubenstein has been a columnist for the San Francisco Examiner, Sports Illustrated for Kids, CNET's (now defunct) GameCenter, Wizard Magazine, and many other national publications.
[citation needed] Rubenstein is the author of Podcast Advertising Works: How to Turn Engaged Audiences into Loyal Customers, ISBN 978-1539374466.
The book relates lessons learned from his time as Director of Marketing for TWiT as well as with his own podcast advertising agency, Adopter Media.
On October 15, 2007, the New York Times reported that Rubenstein had collaborated on a video with Gary Brolsma, as well as Chad Vader's Aaron Yonda and Matt Sloan, as a part of Canon's Battle of the Internet Superstars.
It began airing weekly every Sunday at 7pm PST starting on January 15, 2012, and was part of a several hour long LAN Party which included a grudge match on consoles which featured Glenn playing against other TWIT employees and hosts.