Does Yahoo use AdShuffle to deliver ads in email accounts?

[JS_Harris]

I was aware that Yahoo used both their own ad server as well as Bluelithium but I'm now seeing ads served from AdShuffle as well and I want to know if they are legit or if my browser is hijacked and the legit ads are being suppressed.

They are for spammy credit card offers - a woman is pointing a finger and the ad is HUGE in my email sent folder.

[JS_Harris]

Is there a list somewhere of ad servers used by Yahoo in email?

I'm seeing mediaburst "World of Warcraft" ads and a lot of credit card stuff served by adshuffle and atdmt.com.

Firefox "tools/page info" is showing me those but not letting me block anything so I can't even be sure it's from those.

Does anyone know which ad server is legit?