Gaahh!!! We've been throough this before

Git does not NEED a name or email address to checkout something. So how 
are "Big Scary Warnings"(tm) about things that are not required 
considered anything but user hostile?

Oh, and "email.com" actually belongs to someone so should not be used as 
an example domain name.

"Big Scary Warning"(tm) follows:
git> git-checkout master

*** Your name cannot be determined from your system services (gecos).

Run

   git config --global user.email "you@email.com"
   git config --global user.name "Your Name"

to set your account's default identity.
Omit --global to set the identity only in this repository.

fatal: empty ident  <unknown@localhost> not allowed
git>