Diplomacy can be a powerful skill. Too powerful sometimes. At high levels, it can allow PCs to talk their way out of nasty situations with nothing more than a few dice rolls, situation modifiers, and appeals to rule books.

So make sure you always have a way out of allowing it.

Transcript

Jango Fett: Oh look, Kenobi's followed us.
Obi-Wan: R4, open a channel so I can talk to him.
R4-P17: Bleep biddle ping.
Boba Fett: Dad! There's an incoming transmission.
Jango Fett: Don't answer. He's made his excuses.
Obi-Wan: Oh for the love of...
Jango Fett: But he can still hear us. Hey, Kenobi. Catch!
{Jango launches a mine}
{the mine explodes silently}
Obi-Wan: This is ridiculous. I need a way to talk to him...
Obi-Wan: Can I shoot at him in Morse code?
[SFX]: BWANGGGG! {the mine makes a huge noise}
GM: Your ship has no guns.
Obi-Wan: Of course it doesn't. How silly of me.