Ok here we go.

Someone asks you a question. You tell them the answer to their question and what the next step is to solve this question.
+
They go away and ask someone else the same question. The other person tells them the same thing but does alot of work for them aswell.
+
They go away and the problem is solved. Then you find out they e-mailed someone else asking the same question they have just gotten the answer to from two people.
+
That person (not knowing any of this) then forwards the mail back you asking you to help them out with the same question you answered in the first place.

=