The new quality criteria? Why, it is the same old criteria. Title tag, keywords, keywords in description of website, keywords in first level of headers at least. Bold or highlight your keywords so that Google knows you know what is important on your website. Make felonious use of your alt tags. Watch your keyword density--too much is worse than too little. Use various keywords and optimize different pages on your site for these keywords. Buy, steal or kill for those links! Both incoming and outgoing.
Got a new boss, same as the old boss. The more things change, the more they remain the same. Personally, I think I am going to keep holding contests and keywords be hanged. LOL