Shoutbox

I find that occasionaly when I click something on MSN 7 a pop under window will quickly load and then dissapear. I never see the wnidow, it just appears on the taskbar. I checked in my IE history, and the page is
http://esampler.tns-global.com/esampler/writetest.html?harvest,msn
When I look at the contents of the page it shows
This window has appeared to send a cookie, called 'eSampler' from TNS Interactive, to record that you have seen certain online content, such as an online ad. The data in this cookie will not be read unless you later agree to a clear online request from TNS. TNS operates a strict online privacy policy and no data is being collected from your computer.
Our apologies for any inconvenience this window has caused.
Does anyone else find this happens (check your IE history, it uses IE not your default browser) or do I just have some spyware that effects MSN 7.

Similar Thread: http://shoutbox.menthix.net/showthread.php?tid=36498

That doesn't really say why this happens though.. does anyone know?

Yeah I'm the guy who had the same problem, it went away after that day though I'm surprised no one else has reported it because it doesn't seem to be spyware, it just appears.

if i click on that link, does that mean i am infected? (if it's really true that it has spyware...)
i ran ad aware but nothing came out.