One important factor in seo is the use of title tags.

Title tags can be used inside and image tag <img> and the <a> tag.



Example:

< img src="http://www.yourdomain.com/imagename.jpg" alt="keyword phrase" title="keyword phrase">

<a href="http://www.yourdomain.com" title="keyword phrase" > Link Text </a>

Bradfallon an SEO expert recently added some images to a wedding site he is working on using title tags such as...

"Chat with Other Brides on our Blog!"
"View Some of Our Best Selling Favors & Gifts"
"Wedding Tips & More from MyWeddingFavors.TV"

In less than a week, he was able to get a couple of top10 positions for the following keywords.

chat with other brides
best selling favors
wedding tips & more

He wrote about it in his site complete with screen captures of the google search results.

Bradfallon title tags

This is a very nice case study about using title tags, and it is something you need to consider when doing search engine optimization.