You can jailbreak an iphone 4s easily. All you have to do is go online and download the app for it.
there a JailBreak for the iPhone 4s and below But Not iPhone 4S running 5.1 the Key is iPhone 4S running 5.1 has not been jail broken yet.
That requires jailbreaking to put widgets on your iPhone. Currently there is a tethered jailbreak for iPhone 4S But it i highly recommended that you don't jailbreak.
Be patient - you can't jailbreak the iPhone 4S yet, it will most likely come out in a few weeks.
If you have the iPod Touch 3G or 4G (current one), an iPhone 4 (not the iPhone 4S) or iPhone 3GS, or the original iPad (Not the iPad 2) then use redsn0w 0.9.10 to jailbreak. If you have an iPad 2 or, iPhone 4S, you cannot jailbreak it on iOS 5.0.1 yet
No as its illegal.
yes,the 5.0.1 jailbreak came out !Official EasyRa1n Unlock/Jailbreak iPhone 4/4S iOS 5.0.1
Sure, jailbreak it. Probably not a good idea unless its your iphone.. because stealing.
It is not illegal. Here is the US Gov'ts ruling on it.
Illegal inmigrants
Siri is currently only for iPhone 4s unless you jailbreak you're device.
Sure you can unlock your iPhone 3gs but before that you have to jailbreak iPhone 3gs.