Google has made many custom fonts accessible using a CSS include. This can be used to include fonts on a web page without having to use images. This is useful for SEO while maintaining a good look and feel for the site.

More info on Google’s web fonts

Google web fonts page

This PHP class allows you to generate native Excel 2007 files using PHP. The class uses Microsoft’s OpenXML standard.

Download the PHPExcel class

This article explains how to embed videos using HTML5 (without using Flash). This technique is useful for sites that need to be iPhone/iPad compatible.

Read the article

This application gallery features several free applications that can be used in combination with your Google Analytics data. Several reporting and visualization tools are part of the list.

View the site

This online tool allows you to generate color schemes using a visual tool and then export it to HTML/CSS or as a Photoshop palette.

View the tool

This article has information on the meaning of various colors and how it impacts a web page’s look and feel.

View the article

Google Insights offers several interesting metrics about Google searches such as the regional popularity of keywords, rising searches etc.

View the site

This website provides independent traffic analysis for your website.

View the site

Here are two articles relating to SEO on Google and Bing:

How to be on the top rankings of MSN Bing in 2 weeks

Google is now ranking your site based on how fast it loads

The searchengineland.com site has many how-to articles on search engine marketing, organic SEO and link building.

HOW-TO SEO

HOW-TO LINK BUILDING

HOW-TO SEM