“What makes a Wordpress Theme a SEO Friendly Theme? What are the key points?”

As opposed to the theme, it’s much more about how you customized it. I definitely recommend using the All-in-one-SEO pack, it’s easy to find. Like any other website, you want to make sure you do the following:

Change your permalinks to use the pagename variable. With this enabled, you can set individual posts and pages to have tightly controlled keyword-specific filenames

Take advantage of the RSS widget built into the newer versions of WordPress. This will get you fresh content right out of the box.

Take advantage of common footer linking. I’d say the most important factor is that the theme you pick doesn’t have an encoded footer, meaning the author of the theme gives it away for free because it carries text links for their interests.

After you’ve got the above in place, the next step is to make sure you have unique content concerning your keywords. Of course you’ll need to get links to your website and there’s a few ways to go about doing this but to make those decisions effectively, you must examine your goals and keywords.