Ok, so this is just a fiction question that will test everyone's conscience...
Imagine that the following post pops up on gD :
"Hi everyone, my name is Lilly and i'm desperate at the moment. I'm in urgent need of blood-type xx. The doctors say that i need a transfusion within the next week or i will die for sure. I'm 18 years old and live in xx. Should you have this rare blood-type...please help me!!"
Now, you know what? It seems like YOU have got that exact rare blood-type...it also seems YOU live in the same country as our sweet Lilly...oh dear, she even seems to live about 15 minutes from your home...
What will you do? Help her? Pretend you didn't see the post?
WHAT WILL YOU DO???