Two questions:

Do many google researchers use the tool called "Copernic Agent Professional"... 

Why or why not?

Howdy canbeonlyone-ga,

Even though I have used Copernic in the past (I was an "early adaptor" of
the program) it has been years since I last used it.

I currently use Google for the vast majority of my Answers work as I truly
(and if I didn't I would say so) find it to be a great search engine.  The
Google toolbar makes it more so.  I am not in love with Froogle, but use it
as part of any shopping searches, along with pricewatch and shopper.com for
a various searches.

I use Dogpile and alltheweb for some specialized searches.  Is there a theme
here?  Yep, they are free services.  $79.95?  Eeek!

Web sites mentioned:

http://www.copernic.com/
://www.google.com/
http://www.froogle.com/
http://www.shopper.com/
http://www.pricewatch.com/
http://www.dogpile.com/
http://www.pricewatch.com/

Looking Forward, denco-ga - Google Answers Researcher

Like Denco, I balk at the price of Copernic Agent Professional. I do
most of my searching with Google and AllTheWeb. Occasionally I use a
meta-search engine, such as Dogpile or one of these:

http://www.faganfinder.com/meta/