Scratching deeper - the question is how did this get imbedded into your website pages. It's behaving like Skimlinks or Vigilinks, but it's clearly accessing the DropDownCoupons resources.
I'm seeing the In-Text Ads and I don't have the plug-in in my browser.
Hence it's in the site somewhere.
It's not in the page source text that I can see.
It's got to be buried in the javascript calls, or libraries or perhaps a class definition.
Actually, it could be anywhere!
For that page you link to in post 2 above, lines 501 & 503 are external script calls.
Or it might be bundled into the boxslider script (where'd you get the module?)
Or..
Good luck!
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