As for if a JB is good or bad, quite often the experts are quick to point out how usefull it can be and hoards of clueless people have nothing else to say much past, "the only reason to jailbreak is to steal applications." Forgetting for a moment that every computer on the market allows you to steal applications. Not the tool, it is the character of the user. There are ways to steal IP. that is true. That said, just mention the name(s) of the applications that allow that to happen and see how your post is greeted. We are not about stealing and this forum, the BEST forum, does not allow discussion of this OT topic. That shows we are not about encouraging the darker side; we simply like change and the long list of things we are now able to do because dedicated developers made it possible.
Trust me on this . . . as soon as some dangers start rearing their ugly heads and a JB becomes more dangerous than we thought, we will know. Go to the hacking section and read every sticky posted at the top of the page. You will learn allot and you can make an informed decision.