I've been reading just about everything I can get my hands on regarding Adwords and noticed there's some disagreement as to how many keywords one should start with..

Some people seem to suggest you should start with a modest amount, retaining as much control as possible, and working your way up, adding more gradually and testing as you go.

Others say get as many keywords as possible in there and gradually reduce your numbers based on performance -- one book actually suggests starting with 2000 to end up with 25 "good" ones..

I'd like to hear any views on this and supporting arguments.

G Connelly