Hey guys, I'm not at all a tech savy guy anymore so I'm a bit confused by JB'ing. With the advent of 4.1 JB coming I was thinking about making the plunge and was hoping some pro's could help. 1.) The approved APP store programs are deemed safe by apple, meaning that you won't download a potential trojan or virus to your phone like is possible on the android, correct? So, if I jailbreak does that action alone open me up to potential threats? I have no issues paying for my apps, I would just like some customization in my phone such as different text/ring tones, or having my all texts have time stamps, or being able to have more than 12 items in a folder, etc. etc. 2.) Does JB'ing negatively affect general phone performance, such as battery or reception? 3.) Can I keep all my paid apps (apple app store) working on JB? I've bought some expensive apps that assist me in my work, and are just neat or useful. Will I lose my rights or access to those by JB'ing? Also, if I buy apps from the (apple) app store while JB, will I still have that app if I reverse the jailbraking by restoring the phone? 4.) Cydia is just an unauthorized app store right? If I buy any of those (cydia) apps, then I will not have them anymore if I restore to non-JB, right? If at a later time, I JB again, can I redownload them, like for example in the apple app store for free, or will I have to repurchase? And how does that work, do those (cydia) apps sync in my itunes? 5.) Jailbreaking is ALWAYS reversible right, either by upgrading the phone with the next update, or by restoring the phone (even as a not new phone), right? Good to go, thanks guys. I know thats a lot so even if you only answer 1 or 2, I'd appreciate your time.