good keyword domains like casino.com/gambling.com :hehe:
have page titles like keyword1-keyword2.htm rather than ?crappyparameter=1+2-r*WTF!
get rid of broken links (404s) Google doesn´t like them. Don´t cloak. Write intelligent content. Get good, high PR, incoming keyword links.
Be in relevant industry related directories in addition to the top dogs.
SEOMASTER, I would disagree and urge anyone to avaid link exchange programs or networks like the plage. That can only hurt your site.