Some of the ones I like and work. I dont use all these but have in the past or at least tested them out. You can search these plugins out right from the WP dashboard and instantly install.
Etsy 360. Its like Etsy mini but better.
http://wordpress.org/plugins/etsy360/Commentluv. Lets people share one of their blog posts when they leave a comment on your blog.
http://wordpress.org/plugins/commentluv/This helps your blogs featured image show up in readers like Bloglovin.
http://wordpress.org/plugins/featured-images-for-rss-feeds/Customize your comments more. You cannot use commentluv using this plugin.
http://wordpress.org/plugins/wpdiscuz/This adds Pinterest widgets to your site you can customize size.
http://wordpress.org/plugins/alpine-photo-tile-for-pinterest/This adds Instagram widgets you can customize.
http://wordpress.org/plugins/instagram-feed/This is a good one for all social media, has some nice features.
http://wordpress.org/plugins/ultimate-social-media-icons/Good spam blocker.
http://wordpress.org/plugins/wp-spamshield/Woo commerce. Add a shopping cart.
http://wordpress.org/plugins/woocommerce/Some for now. If you have ones you like, share them here. :)
