You are very helpful because you have to wrestle with spyeare infections every day. You are the expert. It's hard for the average computer user to figure out exactly what he should do to clean up and protect his computer. You have
made it easy.
Are Trojans, malware, adware, spyware covered (fixed) by one anti-spyware program in particular? Seems to me the terms are somewhat interchangeable.
No. I understand however that GIANT's anti-spyware product, recently acquired by MS is about as good as it gets. I've not tried it, I can't offer commentary. Trojans are generally covered by your anti-virus software. Adware/spyware are not. Malware is a whole seperate issue, that's a very broad category. MALicous softWARE can be just about anything. The others categories fit into Malware. Most of all these problems can be avoided by NOT installing free software found on the internet, not going to see jingle cards or whatever sent from your co-worker who thinks he's a comedian and NEVER click "yes" if a website gives you a pop-up and says "trust us, we just need to install this little piece of software".
Personally, I strip out most of the bad/ad content using Admuncher. I get no popups or ads of any sort. It also protects your browser from all sort of obscene behaviour, like redirects and resizing your windows or moving your browser around, etc. Give it a shot. It's linked on my FR page toward the bottom. Free 30 day trial.