Spears (and no I do not mean Britney :) ) identified 10 characteristics of a servant leadder in Robert Greenleaf's book - 'The power of Servant Leadership.' These are:
9. Commitment to the growth of people
10. Building community
The above points 1-3 is about how to effectively manage people. Listening to them, empathising with them and healing relationship between co-workers and friends.
Awareness is about being aware of one's strengths and weaknesses as well as the surroundings.
Persuasion is about how to effectively approach people and motivaate them in the long run. Using powers of reason and logic to persuade other rather than one's positional power.
Conceptualising and foresight is about identifying an appropriate vision, strategy and goals for the team/company, and being aware of the consequences of the actions that one take to achieve set goals.
Stewardship is what I beleive is the essense of servant leadership style, it is about 'first abd foremost a commitment to serving the needs of others.' And this links in with the 9th point, investing the the growth of individuals both from intelectual and career perspectives.
The final point, is about aiming for more than just successful achievement of a goal and creating an effective team, it is about creating a great environment for everyone.
I really this model because it shows the several dimensions of leadership as well as describe a leader as more than just as someone who leads others.