And here is one thing that you can do to improve your standings: report each and every 'spam' site that now appears in your keyword search results.
If the volume of spam reports was to suddenly grow drastically, it would certainly get some serious notice from the Google algo-guys, and, at the very least, your chances of being found would be improved.
My guess is that the number of people who take the time to report spam result pages is fairly small - the members of this forum could probably have a significant effect, if everyone started reporting true spam pages.
Here's the URL for reporting spam to Google:
Google Spam Report Page
Edited by rzehr, 11 February 2004 - 10:21 AM.