Adsense showing text links ads in Ad unit in 728 x 90 leaderboard

Was browsing one of sites when I saw one of the 728 x 90 leaderboard display ad in the following format (see that attachment). I have refreshed the same page couple of times after that but didn't see it again, has any one seen this happen? Is google trying out another ad strategy or was it just a bug?

 

What are we looking at exactly?

 

See the Honda travel, harley touring links below the main ad, well that was part of the 728 x 90 leaderboard

 

You appear to have missed the discussion on this. Chec it out at http://forums.digitalpoint.com/showthread.php?t=424336

 

So it seems, thanks Claudek for the link . For a moment there I was worried that how did those links appeared

 

Ok so its new ad format...

 

ahem

 

I would like to know if anyone has seen a increase in money since they started this. I like the look but not sure how well it will pay.

 

I have started getting a little worried with google's conduct in past couple of months, first they started forcing CPA ads on some publishers and now this. From my experience the link units have turn out to be lower paying ones then the normal ads, also if I have chosen not to display link ads then why is it being forced on me?

 

It's a new ad format Ad unit + Link unit, May is in the experimental stage.

 

i think thats just a bug,my 336x280 sometimes showing that ads too.

 

Its a new ad format being tested by Google..