About the amount of points, if you go here: http://emudevs.com/xperience.php?go=earn you will see a table which shows how many points you will get for particular item, and what is the average value for the same thing. This is what i am asking for, how does this work?
What do you mean how does it work? The points per item are pre-set to an amount and that page shows what the members average and what yours is.
Then the experience tab in your profile shows all of your current statistics and counts