Even though Apple has released a lot of improvements in iOS5, there is still only one signature that is used for all email accounts. The default signature is "Sent from my iPhone" or "Sent from my iPad", however, in many cases you'd like to have your contact info in it.
"I have one more thing..
Oh fuck it, I don't care anymore, I'm selling this shit to Disney!
For many people, this will be at night, when they go to bed and they plug in their iDevices.
Now, raise your hand when you keep your Mac running during the night, especially those with a laptop.
Right, thank you.