Robb was made a senior analyst in January 1996 and led the launch of Forrester's first research service dedicated to covering developments on the Internet, called "Interactive Technologies". While there, he wrote the reports, "Which Web Browser" and "Which Web Server" in early 1996. In summer 1996, he wrote the report "Navigation Hubs" which predicted that web search services like Yahoo would dominate the Web. In fall 1996, he wrote the Forrester report, "Personal Broadcast Networks" on the rise of social software — software that allowed people to broadcast their written thoughts, pictures and videos and to subscribe to other people doing the same.