I got eutwinks listed at top position for twinks on the uk version of msn for about 2 weeks and got an easy 5 signups from it...but then I got pushed back to the 2nd page Like togm says they are a total mess right now, one minute you can be #1 then the next you can be not listed. Once they settle I am sure you will be getting some nice traffic, lots of newbie traffic (those that have not learned how to switch their default browser yet) which can pay off big!

cheers,
Luke