At this time (mid-2014), 67 moons of Jupiter are confirmed.
They are all in orbits around the planet. None are 'on' it.
jupiters ice moon is Io
we can't use jupiters moons for anything because fistly we can not get out that far to reach Jupiters moon and if we could it would take thousands of years and Jupiters Moons would be to big to do anything with anyway. so the answer to What could Jupiter's moons be used for? is....Nothing.
it's moons
Socrates, Gallileo
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Jupiters Moons
jupiters moons are different some have an atmosphere and MOST are asteroids
Europa has frozen oceans.
Lo Europa and Ganymede
Io
io is the brightest from jupiters surface
Its Calisto,Ganymede,Europa, and Io