Credits - Gifts

My wish is that user get virtual money for actions like post comments , upload media (profile images,gallery images, video , music also profile music if possible),write blogposts, make poll,login on site only once a day and so on and than he have the choice to click on a other users profile view on a link where he can send a gift to the user in form of a graphic.Users money status should show on account page and recieved gifts should show on profile view but only the last 5 with link to a overview site where are listed all gifts with date and nickname and photo from sender.An email notification would be great.Graphics can be examples so dont must be perfect because i have a guy who make very good graphics.Gifts should be 10 or 15 like kiss, flowers, happy birthday card ....