[Firmware]

Rooting: Gaining access to core features within the operating systems which may or may
not be accessible publicly. Jailbreaking/rooting are effectively the same thing.

For example, the LED colours on the PlayBook (Note, this is just an example and much more complicated things can be achieved.).

Unlocking the bootloader: Gaining access to the part of the device that starts to operating system. In this case, QNX, in Androids case, Android. When the bootloader is accessed, new operating systems may be installed.

Although unlocking the bootloader is a great thing, the chances of this happening to the playbook are slim (but it is possible), and if it did, it may take a long while to get an alternative operating system into a state where it will work properly with the PlayBook's hardware.

Hope this has cleared some of it up for you all.

Message to people claiming that users will moan to RIM when our devices go wrong:

Only retards who have no idea that what they're doing is against RIMs preferences will complain if something goes wrong.

Anyway, peace!

Regards,
Crwblyth