Hey Richard,

With regards to the "net" I am not talking about the domain extension but rather
my domain name itself. Again my goal is to target the search terms:

"internet marketing course"

I had a really tough time coming up with a domain name based on those terms. So
I did some LSI research with Google and found that Google understands that the term

- net related to "internet"

Simply search Google: ~net

You will see that Google has bolded the word "internet" so we know that google
understands that these two terms related to one another. I would have rather
grabbed a domain with "internet marketing course" but it was just not available ...

LSI is powerful stuff and really helps with ranking ;-)
Has been my experiance anyway.