Cool Text - Graphics Generator [Rate Site]
Cool Text is a free graphics generator for web pages and anywhere else you need an impressive logo without a lot of design work.  Simply choose what kind of image you would like.  Then fill out a form and you'll have your own custom image created on the fly.

W3C - Web Graphics [Rate Site]
Overview of graphics formats for the Web from W3C. Includes links to descriptions of SVG, WebCGM, PNG, JPEG and GIF, plus how to integrate images in XML and HTML pages.

CoolArchive [Rate Site]
CoolArchive is a huge free vault of clipart images, fonts, icons, hundreds of animations, buttons, bullets, arrows, bars, html and photoshop tips and sounds. Plus an online logo generator and button maker to create your own graphics.