There are thousands of wordpress plugins are available for you to download for free, but not all of them are really useful for you or suit to your blog. Anyway, I have 5 popular wordpress plugins that I surely will install when I want to create a new blog. Check them out as below:-

1. Akismet – is a collaborative effort to make comment and trackback spam a non-issue and restore innocence to blogging, so you never have to worry about spam again.

2. Google XML Sitemaps – generates a XML-Sitemap compliant sitemap of your WordPress blog. This format is supported by Ask.com, Google, YAHOO and MSN Search.

3. PageNavi – Adds a more advanced paging navigation your WordPress blog. » Example: Pages (17): [1] 2 3 4 » … Last »

4. Secure and Accessible PHP Contact Form – powerful yet easy-to-install contact form features exceptional accessibility and usability while still providing extensive anti-spam and anti-exploit security features. A marriage of communication and peace-of-mind.

5. Sociable – Automatically add links on your posts, pages and RSS feed to your favorite social bookmarking sites.