What the heck is this "Text Enhance" thing popping up on my site!?

Running v1.5.0, add-ons installed:
Checkout by Amazon
Editable Sidebox
EZpages on Sitemap
Facebook Like Button
Pin it Button
Testimonial Manager
USPS shipping
TinyMCE
Shopping Cart with image sidebox
Random product sidebox

Ok, so now I just looked at one of my product pages and saw that the word "shipping" was a link. I didn't know what it went to, so I clicked it and it took me to some spammy "you are today's winner" page for a Walmart gift card. I don't want this stuff on my site!! How did it get there? What do I have to do to remove it???

Hi Webkat, a link to your site/the page in question is needed first.

that looks like hack job . if you have links that are going to different sites you need to check your site for hacks.

It may not be the site that's infected, but rather your system/browser.

Yes it turns out it was the browser. I googled around and found this:
optout.textsrv.com/optout.php

I opted out; we'll see if the problem goes away.

(I didn't include a link in my first post because it was a sporadic problem, not always showing up on the same pages, etc)