Images
background-image: url("")
- CSS to add a background image
- repeat
- repeat x
- repeat y
- no repeat
- fixed
- img stays in the same location on the page
- scroll
- img moves up or down with the user
- Search engine optimization
- using key words and relevant text to help search engines return your site
- Google analytics
- allows for seeing who uses your page, how long they stay, new vs returning visitors, etc
- Flash
Mozilla Video/Audio APIs