As I regularly communicate with my group using the Internet and email, and my current job involves the Internet, yeah, I would have to say it would be a lot different! I recruited a lot of my current group using a combination of flyers and the Internet, although I have to say that the flyers were more successful in this case.
We download free adventures, send each other artwork to use for counters (I am the designated counter maker), and use a discussion board to communicate with one another. All of these involve email and/or the Internet in some way. Not only that, but many of the GMs in our round robin group use the Internet to research material, especially in modern style games.
In other words, my gaming experience would be completely different without the Internet, and I doubt I would still be gaming.