Have an online store? Haven't checked out Squidoo?

Online Stores and Lenses - promoting your store on Squidoo

Some SEO tools that are worth a look ...

Cool SEO Tool
Type in your site and a search phrase and get a comparison on a number of useful factors.

NicheBot
Keyword research tool.

Google Ranking Factors
Cheat sheet of factors that are supposed to influence Google rankings. No information on weighting of factors. This information changes over time - so check the date of the last update.

Also interesting ...
Rollyo
"Roll your own search engine" - personalised search tool. Create lists of relevant sites to search.

GoogleGuy Says - Google Ranking Info

A weblog (with RSS feed) dedicated to analysis of the postings of a Google employee in a webmaster forum. He seems to be pretty careful in the way he says things to avoid his words sounding like he is uttering a Google pronouncement. Definitely some interesting reading. Probably the closest you will ever get to insider tips from Google.

"By placing the "&tmpl=E088" characters at the end of a Yahoo search results query, they'll be able to see what are reportedly the Inktomi-only results."

MarketingWonk: 'E088' Template Gives Sneak Peak at Coming Inktomi Search Mayhem

Discussion here seems to suggest that Google is undergoing an update this weekend:

WebProWorld Forums :: Search Analysts Predict Coming Google Shift