10 years ago, I hanged out a lot in internet cafés, and loved it. There was definitely something cool about it: hanging out with tech-savvy people, using beastly machines on powerful internet connections, exploring the exponentially exploding internet, playing games, ... It was a very social experience, and I befriended a few other regulars there.
I do miss the ambiance of these cafés, and I wish that laptops, better internet connections (the days of 56k are long gone) and ubiquitous free WiFi hadn't killed that kind of business.
There's potential for a revival of internet cafés, though. Good Wifi, preinstalled docks for common laptops, smartly arranged space (to avoid spilling coffee on your precious laptop because you accidentally pulled a cable !) and a different pricing model, you could attract easily the horde of Starbucks and McDonald's "laptop hobos"...