Its because it had to be tampered with so you could get it through jailbreaking and is more prone to crash than the official download.
No you can download apps without jailbreak, but you will be able to download apps that have been disapproved by apple if you have jailbreak.
If they are apps downloaded from cydia, then no, because cydia apps don't sync with iTunes.
cydai
Yes.
yes
to jailbreak an iphone means that you can download apps that used to cost money for free.
It allows you to get apps for free in the app store.
you get all apps free
Hi! When you jailbreak your iPhone you get a program called Cydia. If u used Cydia then from Cydia u can download Installous and it will let u get free cracked apps
You can get free backgrounds, free apps, and free music by downloading apps
all your current apps will stay the same after jailbreaking.
You can Jailbreak your ipod and you get an app that lets you sort you apps/games.