PartyPoker nick's city in UPPERCASE?

All my party nicks have city in UPPERCASE.
I.e. i typed: "city", but i see "CITY" in a tooltip on mouse over.

What does it mean if any?
Or how i can avoid it?

Tanks in advance

[SamIAm]

[ QUOTE ]
how can I avoid it?

[/ QUOTE ]
I think you should work more on your game.
-Sam