I have found that even if you don't want to use Adwords long term, that it is an excellent resource for determining what keywords to optimize for your organic program - especially if one uses the broad, exact and phrase match program to its fullest extent.
You can get google to look at your site with Adwords, its better than waiting to be traawled I think, just pay to be top for a while and it sparks things off a bit.
What if you do't have much money to invest to adwords? Is there a way to get some cheap traffic from it? I also heard that you can lose lots of money if you do it wrong.