No, I am not saying that we should switch to Adroll.

I've been experiencing an odd thing lately... I have AdSense codes placed on one of my sites (AdSense only). However, the odd thing is that instead of them AdRoll ads are showing (sometimes). See image below.

(My cursor is hovering the ad)

See the status bar? Why the hell is Adroll there? Is this some kind of Google's test or something's wrong? I see the Google URL later in the status bar, but why is there?