Link? I'll merge (or you can).
And FWIW I usually just hit them. I don't think it's a big deal to take 'em, either. I just typically don't.
The practice range at Whispering Woods is to the right of a LOOOONG par four. So it gets a fair number of "additional" golf balls. :)
Here's a possible: http://thesandtrap.com/t/5930/stealing-range-balls-i-dont-get-it