The document provides seven tips for effective brainstorming and six ways to undermine brainstorming sessions. The seven tips are to sharpen the focus, establish playful rules, number ideas, build on others' ideas, make use of the space, stretch mental muscles, and get physical. The six brainstorming killers are allowing the boss to speak first, giving everyone a turn, limiting participation to experts, holding sessions off-site, prohibiting silly ideas, and requiring everything to be written down.