You also had the full information here:
how to give kudos
how to see who gave kudos
hwo to remove kudos given by yourself
The only thing I can't find is what are the real goal of kudos ?
I have seen that my status have changed (I believe from the moment I have had more than about 10 kudos) i became trusted
but I can't find the rules that are used for this ?
When do you become trusted contributor?
When do you become super contributor ?
When do you become trusted expert ?
If someone can inform us ?