As a legitimate cardio fitness exercise inline skating is making a comeback. Really! Not just because I am into it but (I think) because just like everything else that comes and goes, the equipment is so much better today than in the past.
If you are interested in learning about inline skating and perhaps getting into it yourself, here are some quality links to checkout:
Beginners Guide To Inline Skating
RollerBlade: Skating For Fitness
Or, if you just want to play internet video games about inline skating then click here.