call for help---how to invite my friends?

i saw a sign"invite your friends via e-mail,and you will earn 25% of their money"
when i sign up,and i skip that step...

however i can't find that function anymore

could somebody tell me...

where is my discussion ?

I started a discussion yesterday
and earned 0.02$ today
but where is that discussion?
how could I find that and see what others said?

thank you for help