I just checked my stats for today and I was surprised to see the following...
impressions clicks
target1 172 2204
target2 86 1202
target3 43 965
target4 36 239
The only thing I can think of that would cause this is a countdown timer that I have on the page. When I tested it, it redirected to the offer in the same window but I think it may be redirecting to the offer in a different window thousands of times...
<script>
var seconds = 60;
setInterval(
function(){
if (seconds <= 1) {
document.getElementById('seconds').innerHTML = 0;
window.location = 'my_offer_page.php';
}
else {
document.getElementById('seconds').innerHTML = --seconds;
}
},1000);
</script>
Just thought I would share so it can be avoided 
mmm are you sure? window.location should be just a redirect,
there's window.open for opening new windows
(unless some browsers have a weird behavior)
Not really sure. Has anyone else seen this before - maybe something else is causing it.
That is pretty odd. Just shoot up Polarbacon an email. He would know!