that it is possible to "hide" key words behind the pictures and escape spiders?

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http://www.usflashmap.com/

alt tags, but i dont think that is what they are for

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but alt tags are also searched by spiders, aren't they?

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http://www.usflashmap.com/

Why would you want to hide keywords from the spiders?

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I think what he's referring to is hiding keywords in text behind images (viewable to search engines but obscured to visitors), and yes it's possible but not recommended.

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Alt tags appear when you mouse over the image though... so if you mouse over a picture of a property, and you see like every city you work on.. they might wonder what's going up.

The alt tag is used to describe the picture.

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A wise use of alt tags is fine. If you use them to stuff KWs you will find that to be a bad practice.

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Sam Chapman
Austin, Texas
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