How many Linux Servers do you use in production?

How many Linux Desktop do you use in production?

What Linux Distribution(s) do you use for Servers?

What Linux Distribution(s) do you use for Desktops?

What do you use your Linux Servers for?

Did your Linux Servers replace other Operating System Server (i.e.
Windows, Unix, BSD, etc)?

Has switching to Linux Server and/or Desktops lowered your TCO?

Has administration become easier or harder?