No 4. SEO Title Tags

This plugin allows you to optimize all the title tags across your blog. The author Covario says “It blows my mind how post titles are also used as title tags by WordPress, considering that post titles should be catchy, pithy, and short-and-sweet; whereas title tags should incorporate synonyms and alternate phrases to capture additional search visibility.” This plugin will allow you to add tags to your posts and every other page possible.

Go here to download.

No 3. Google XML Sitemaps

This plugin generates a special sitemap which will help search engines such as Google better index your site. Although, the name suggests only Google, the plugin actually optimizes your blog for almost all the major search engines including Ask.com, Yahoo and Bing. It also notifies every major search engine about your new posts.

Go here to download.