Awareness site with multiple focus. how to list?

yahoo listing directory

[denisbaldwin]

We have a website that cateries specifically to the energy conservation, recycling, environmental, safety awareness and quality process markets.

Since these topics are somewhat connected but not in a narrow and easy to limit way, I find it hard to choose which part of the Yahoo Directory to put the site in.

Which directory pages would you suggest I put it in on Yahoo to get the most bang for our $300 buck?

Thanks for the help!

Denis

[edited by: engine at 10:42 am (utc) on May 31, 2007]