Skipping is EXCELLENT cardio and very good for weight loss. It's what boxers use to get their cardio fitness up and shed weight to be in lower weight brackets (ever seen "Rocky"?
). It's also great for working all the little leg muscles that help you balance - bonus - as well as fantastic for those arm muscles too. And as you said, very convenient so long as you have somewhere free from snags to do it in. Make sure you have supportive shoes if you're like me and have dodgy knees and ankles.
Oh and to make it more interesting, nominate a "punishment" for getting the rope caught, for example, 5 pushups or sit ups. Gives it a bit of variety which helps alternate your heart rate (similar to interval training) and an incentive to keep those feet up! In general, you need to be exercising for at least 30-40min before you start eating into the fat stores, but anything is good!
Don't know if it would help you get taller - that's more or less a genetic and nutrition thing. More activity could help with posture so you stand and sit more upright and not slouched which would effectively make you taller. Maybe?
35kg lost. (November 2005 - October 2006)
15kg gained again (as at October 2010).
Back to the drawing board - Let's do this thing!
"You can't change the winds, but you can change the sails"
"Reach out and take control of what lands in your lap"