What Does it Mean to Root An Android Device?

I was very curious about the term "rooting" when I got my myTouch3G.  I saw the term constantly used on various Android Forums.

Root Defined via CyanogenMod Wiki

"Carriers may impose software limitations to prevent using the handset in a manner that might undercut their voice plans - Skype, Google Voice, etc - or putting strain on the data network - tethering, streaming video, etc - The way around this is to acquire 'root' (administrator) access on your phone so you can install/modify/fix/break anything you want."

Are there Dangers in Rooting your Android?

There are always dangers when you alter the device's manufacturers configuration.  You risk the possibility of turning your beloved Android into a brick and rendering it totally unusable.  Make sure that if you're going to root your device, you understand the possible negative results and irreparable damage that can be caused.  Be absolutely sure that you are willing to live with the fact that your phone could become a brick.

Benefits of Rooting your Android via Lifehacker

Here are five discoveries and suggestions for Android owners considering a root of their phones, and tips for those who already have:

A real performance boost

Easy tethering over Wi-Fi or Bluetooth

A better keyboard

Multi-touch browsing

Bonus apps and widgets from other builds

 

Rooting is said to also void your warranty!