It is for the data package that you have no choice but to get. The data package covers the email and internet. Text and pic messaging falls under the voice plans.
Originally Posted by robo456 
I'm not sure as I haven't gotten mine yet, but I thought that was the "unlimited data plan" which covers the internet side. This is ADDITIONAL to your existing voice plan.
Now, I'm not sure if this is true, but I had asked a Verizon rep online via chat about instant messaging (like AIM/Yahoo/MSN) and she said that those actually use text messaging instead of the internet data, so if that's true, you wanna make sure you have unlimited text messages as well!
--rob