Google "Performance Testing" Ad

What is the purpose of this strange ad?

[gmoney]

I conducted a search for "testing" on Google and I saw a funny adwords ad that looked like:

Performance Testing
Please help us out by following
this link. You can come right back.
www.google.com

I tried it out later and I got:

Performance Testing
Please ignore this link.
Thank you.
www.google.com

The link goes right to Google's home page. Anyway, the ad switches back and fourth with a few reloads and I was just wondering if anybody had an idea what the reason for the ad might be.

[jbinbpt]

That is strange. It is also the only ad served up. Is it possible that this is a reserved adword? Does Google do that?

Is it an 'ing" thing. Other "ing" phrases only showing one result running, biking, fishing .....
But other "ing" with multiple results shopping, boating ....

jb

[Shak]

got that aswell, no ignore prompt when I returned though?

Shak

[Chndru]

I see a couple of ads after a bit of refreshing.
In First position Google
In Second postion a dot com website with a subtitle "We test everything under sun"

[mack]

Perhaps being used for trademark keywords?

Mack.