urls, positioning and hyphens (Score 1)

I have noticed a high incidence of hyphenated urls in the top positions on Google. Could you confirm that you are weighting the url heavily in determining content and relevance? Additionally, and I know we're only supposed to ask one question, but this is important: Your Adwords programme seems to need some finetuning. Some terms show much higher searches on Overture, while other common queries show no results at all. Are you aware of this? And if so, do you have plans to finetune this tool in the future?