Good SEO for e-commerce sites
SEO for e-commerce is quite different from SEO for websites.  They come with their own challenges. If you are a small ecommerce businessman, you must have noticed the difficulty.  The basic thing is that content, or rather, copy plays a very important role in SEO and ecommerce sites have very little content.

There are a few tips that can help you achieve enviable ranking using SEO specifically for ecommerce websites.  

Just remember that words of any kind, or coding counts as content so you can design your ecommerce site accordingly.

You need to use keywords.  These are very important for any kind of search engine optimization.  Make a key word list.  This needs to be used in each and every area of your ecommerce website.

Suppose you are selling wedding dresses and accessories from your ecommerce site, you need a list having “wedding dress”, wedding dress online, wedding dress boutique online.  These will do for your home page.

Now let us come to the different pages.  What does each page deal with?  Do you sell accessories?  Are you selling flowers and other decorations?  You could have different pages dealing with the types of dresses you sell.  Optimize the same key word on all the pages.  For instance “formal wedding dress” ‘discount wedding dress”, “outdoor wedding dress” and so on will help optimize your keyphrase.   

Since the search engine indexes each page separately, you have an opportunity to make each and every page stand out.
 
You need to optimize your site navigation.  Create category and page names using keyphrases.  However, ensure that they are manageable in length and not too long.
 
The above mentioned key phrases like formal wedding dress, discount wedding dress etc can work for your separate categories.
 
These are applicable to your site, and to your categories.  Let me explain.  Go to the websites content management system.  Name your first category as “formal wedding dresses” and name your first navigational link as “formal wedding dresses”
 
Your keyphrases can also work as individual url page links.  Formal-wedding-dresses can be a navigational link too.  It is not feasible quite often, but it can be done in certain cases.
 
Use long tail key words as a breadcrumb trail.  For instance home>wedding dresses>formal wedding dresses>victorian.  It creates navigation reference for your visitor and acts as a long tail key word.  This long trail of key words works well for your customer and the googlebot.
 
Use alt tags and image attributes for your descriptions.  These tags work the same way as anchor texts do.  So use your keyphrases here.

Lastly do not ignore copy.  Good copy is extremely vital for your site.  It communicates with your visitors, converts them into buyers.  Search engine spiders love it.  So ensure that your site has well written copy.  I agree that e-commerce sites do not have much space for copy.  Many ecommerce site owners shrug away copy because they cannot take the time out to write articles, with the many things they have to do. You could outsource it to an SEO expert who will do it for you.