Hey Cajun!
Ethics is something you can even learn in University in the philosophy. I was in a rush when I wrote that message so let me explain my point of view on the matter.
What I would find unethical in the loose term is to spend all my time on TT for fun and not for work. I answer questions for others not because I owe it to them but because it pleases me to do so. And I feel as though the tek-tips forum and the star system is made to be addictive. Getting public recognition (as a star) for showing your knowledge and sharing it with others can become a drug for certain people. I know it did for me!
Now TT for me on company hours might come in handy when I need to find something out without having any luck through Google. But as a general rule I can get answers myself when I did just a little harder. Essentially TT might save me time but it may not, and most times it doesn't (i'm just naturally good however and don't require help most of the time). Helping strangers is not what my boss pays me to do. So essentially I could see him not minding me asking questions and receiving answers on company time.
For me answering and getting stars is fun and doesn't help my boss out. I could consider that it is unethical for me to TT the way I generally do during work hours.
Sincere truth is that I still spend between 30 minutes to an hour each day on company time answering and reading posts on this site.
My arguments are that I need a break from my code and TT provides me with that break!

I could even go further and say that because I help people out I will get help in return because I allow, in my personal way, that such a community as TT exists. And since I sometimes get answers there for my work it's a fair tradeoff!

But that would most likely be a lie for many of us. All of us most likely spend way more time answering and reading rather than asking questions!

I think Cajun from seeing you in some of the same forums as the ones I visit that you probably help out more than you actually get help from TT!
I hope this clears things out!

Gary
Haran