If possible, I want to know your opinion about following:

I am working on Employment related affiliate site providing
information about job searching, interviewing, resume writing and so on...
Site is oriented to USA and CA job market.

I have noticed in past three weeks strong visitors drop (about 30%)
Search engine rankings - the same ( or even higher)

Of course summer months are not best for job searching, but today is
almost middle of September.
Actually, last two days traffic is growing to normal, but sales are
dramatically low

May be this is Hurricane Katrina influence or something else?
What is happening with your sites.

If you operate in similar industry Your experience is very helpful
I hope you have comments about this

Thanks for your time