1. DOUBLE CHECK YOUR SEO
Write better content and improve your SEO with WordPress SEO by Yoast.
2. ALLOW SOCIAL SHARING
Share on literally everything with Social Media Buttons for Share by using Lockerz.
3. POST ON SOCIAL NETWORKS SEAMLESSLY
Auto-post your blog on your various Social Media sites with Publicize.
4. BREATHE LIFE INTO YOUR ARCHIVES
Set a time frame to re-tweet a useful article from your archives with TweetOldPost.
Sources: self experience, socialmediatoday.com, wordpress.orgOrder Installation Service