Join Date: Aug 2006
Location: San Francisco Bay Area
Submit Photo: 5
Photo Submissions 18 Times in 12 Posts
It sounds like a function in your browser or a tool that has been downloaded. I had that happen after I downloaded something like the Yahoo! toolbar (I don't remember exactly which item it was) and it had a bunch of spyware and stuff bundled to it. It was a pain to remove.
If I recall correctly, the underlined words would take you to a search online for a similar item if you clicked on them. What happens when you click on "Cash"?