The Problem with Sites Like Digg and Google Images is that they Host your Content in iFrames and if you Wish to Stop Digg and Google Images and Many Others this Code or the Plugin May Help If you Want To Stop Sites Hosting your Content in a iFrame the use this WordPress Plugin for Breaking iFrames alternatively you can Use the Following Script for Other Blogging platforms such as Blogger and B2evolution
<script>
if(location.href!=top.location.href){
top.location.href=location.href
}
</script>
There are Many Sites that Will try to host your Content in iframes and Place their Adsense Code on the Page so this Plugin and Code are Helpful to Stop these iFrame Cheats for Profiting on your Hard Work