I have never jailbroken my iPhone. But now I am seriously thinking about it. After I redsn0w my 3G, how do I install apps? Does app store still work? Or do I need to use cydia store only. Are apps free in the cydia store? or do I still need to pay for them? I know there are app compatibility issues with the 3.0 firmware... but I guess the developers will soon update them.