how to get good keywords for a site

Do you have a question? Post it now! No Registration Necessary.  Now with pictures!

what is the best way to obtain a good definition of keywords specific
for a site, how best to optimise this.
do on-line keyword generators work?
the site i am looking to get some good keywords is

Guy's Hospital, charity, paediatric, cardiac surgical, cardiological,
anaesthetics, intensive care physicians, Sri Lanka, saving children,
mercy mission

What is the optimum number of keywords, that should be used?



Site Timeline