Lesson Learned from XXXXX

You will teach in the intrest of the greater good of all, just to be nice, or maybe as a demonstration of power.
They will do something remotely useful with what you have done, or perhaps just fill in a small missing part.
They will begin to help other people, but will not mention you.
They will gain money, fame, and power, and give no credit to you.
They will eventually completely forget or disregard the help you gave them.
They will use the knowledge that you gave them against you.
You will be destroyed by the one you helped, while being shown no gratitude.
You have been warned; may you not suffer the same fate as I. (Unless of course, you are XXXXX, who deserves it, and I hope gets it worse than me.