Towered
Superstar
I still see people rollerblading, though they're mostly relegated to indoor venues.
Scooters are much more popular among children than rollerblades these days.
There are even children's running shoes with wheels near the heels, most of which are made by Heelys. They are generically called "roller shoes."
Heelys - Wikipedia
en.wikipedia.org
There's even a section about injuries sustained by wearers.
Scooters make a lot more sense to me than rollerblades - they have handles for stability and steering.