http://www.techdirt.com/blog/i... Just for info. Not trying to dispute whether the article refers to a true 'first' or not.

Sat in the local Tandys (Radio Shack) all day, every Saturday on their TRS-80 Model I, and later the Model IV. With thanks and much appreciation to the store dude Chris, who allowed me to do this week in, week out, as long as no customers were affected.