One other thing: I've been using Firefox for years. With the early versions (through 2 point something) that ran under Windows 98, Spybot S&D used to turn up suspicious items such as tracking cookies fairly often. I'd add each domain (ad.doubleclick, or whatever) to Firefox's list of sites not to accept cookies from. Over the next few years, my "no cookies" list grew to maybe 30 entries and the Spybot hits got very rare -- maybe one a year by the time I moved to a newer computer that could run updated versions of Firefox.

Nowadays, Spybot S&D hardly ever turns up anything except right after I've used IE or Chrome. I use IE or Chrome only when I have trouble getting to a webpage with Firefox and I want to see if a different browser will help. Their (apparently) greater vulnerability to spyware leads me to stick with Firefox.

Just out of curiosity, what browser do you get those orange links with?

Oh, one other thing: for the last year I've been reading pretty regularly at another site. One day about 6 months ago, occasional words started turning into links at that site only. I don't think the links were orange; more likely, they were "underlined" with something like a row of blue dots. The problem cleared up by itself after a few days. I'm guessing that something had infested the server at that site, not my computer. I don't remember if I even ran either Spybot S&D or Microsoft Security Essentials before the problem cleared up but if I did, they didn't turn up anything.