evhead.com: Ten Rules for Web Startups

"#1: Be Narrow; #2: Be Different; #3: Be Casual; #4: Be Picky; #5: Be User-Centric; #6: Be Self-Centered; #7: Be Greedy; #8: Be Tiny; #9: Be Agile; #10: Be Balanced; #11 (bonus!): Be Wary"

Click on article title to read the details, and pay special attention to rule 11 ;-)