A Guide to Using Images to Drive Traffic to Your Site

[mandy]

Here are some tips for using images:
Help Google Decide What The Image Is

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      Use descriptive file names for your images.

      The first hummingbird photo I came across on the search above had a file name of broad_tailed_hummingbird.jpg. This helps Google to know what the image is about, a lot better than if it was named photo1234.jpg.
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      Use the alt attribute on your images...

full article: http://www.patbdoyle.com/?p=67