All you need to do, to send scraps to many friends, is to click on the 'Try new orkut' option, if you aren't already using it.
Now click 'home' and press the 'HTML' button and paste the code of the image you'd like to scrap from OrkutScraps.us

Now, click on 'change' and select the friends to whom you would like to send the image scrap.

Click 'post' and the image scrap will appear on the scrapbook of all the friends you'd selected. ;-)