(click the bars on the graph, or this link, to take the test yourself)
Their summary: You are sociable, outgoing, energetic, and lively. You prefer to be around people much of the time. Stressful and frustrating situations can often be upsetting to you, but you are sometimes able to get over these feelings and cope with these situations. A desire for tradition does not prevent you from trying new things. Your thinking is neither simple nor complex. To others you appear to be a well-educated person but not an intellectual. People see you as tough, critical, and uncompromising and you have less concern with others' needs than with your own. You set clear goals and pursue them with determination. People regard you as reliable and hard-working.
My summarized version of the detailed analysis: I tend to be neurotic and anxious, extroverted, crave new experiences, love ideas, am helpful but simultaneously suspicious of the motives of others, don't mind confronting or intimidating people or otherwise throwing my weight around, and generally do whatever it takes to get the job done. Essentially accurate in most important respects.
Hat tip: Fiona.