Yes, Jailbreaking is completely safe.
Because it is just a software mod, it can be restored using iTunes.
All Jailbreaking does is go into the phone and unlock everything that apple locked to keep you from getting everything free.
I recommend using the blackra1n program from blackra1n.com.
Yes it is completely safe, I have jail broke many programs. The only problem is if you update your iPhone/iPad by plugging it into the computer, all broken programs will be deleted, and you will need to re-break it.
No, you can always restore if something goes wrong (which typically doesn't if you know what your doing) but your device never becomes unusable unless you do something to the hardware of the device.
If you want to be safe, before jailbreaking, backup your data to iTunes or the Cloud.
It is safe, but there is only so many you can do with a jailbroken iPad. I have one myself and themes are limited but they may just be me. I guess it would depend on the iOS version of your iPad.
It is relatively safe but anything electronic is not 100% safe.
Although it is tempting to jailbreak an electronic, what you are doing is equivalent to piracy or theft, which is illegal, so yes. It is risky to jailbreak an iPhone or any electronic.
obviously, as you cannot get them w/o jailbreaking
Yes, jailbreaking does void the warranty.
"Jailbreaking" is another word hacking. Therefore you void your warranty but you get cydia, a jailbreaking software. Jailbreaking does have it advantages and Disadvantages. But if you want to send it to apple to repair it you have to restore it to factory settings to get back your warranty.
Yes; not jailbreaking it. If you mean a way to do the same thing as jailbreaking without actually doing so, there is no current way to do so.
Jailbreaking a phone is partially legal and partially illegal. I have a post regarding this http://www.techlucid.com/2013/11/is-jailbreaking-illegal-or-not/
It is impossible to get an installer on an iPod Touch without jailbreaking.
It is up to you. No matter what you have on your ipod will become messed up when Jailbreaking...
no, it is not illegal
No
By jailbreaking it.
no
No, jailbreaking has been legal since 2010. However, if you jailbreak, you will void your warranty.