If you work in the Humanitarian sector, beware. You can't afford to piss somebody off because that person will come back to hunt you.
Yesterday I was chatting with a nice gentleman who had just finished Peace Corps in Niger. I talked a little bit about my time in the Congo and he says:
Him- "I know someone in Congo"
Me- "Oh really? Well there are a lot of expats there but I may know them"
Him- "Her name is KW"
Me-"No way! That was my favorite person in the Congo. She even lived in my building! I just talked to her by Skype last week!"
Him-"My, that's weird. Well my wife was considering applying to a job in the Congo with X organization"
Me-"NOOO! So funny, that's where I worked!"
At that point the conversation got louder.
Me-"Wait, wait, is your wife a health person"
Me-"Oh my GOD! That was for my position! I wrote the job description! I remember emailing her about it too!"
And this is during my lunch break at the temping job. I'm so glad I didn't do anything mean to her :)