Mind if I chime in with some SEO tools?
Here's a couple that I use almost everyday, or at least anytime I am starting a new site or developing content for an existing site.
These are two tools for finding out which keywords that relate to your content or niche are the most searched on. It is important for SEO on how you name your pages, the words you use on the pages and in the title tag, alt tags, H1 tags, blah blah blah.
http://inventory.overture.com - is free. Type in your keyword and it will show you how many people searched on it along with other words that are related. It's a good brainstorming tool for coming up with keywords.
If you want to go much deeper than this, there is the paid service from
http://www.wordtracker.com