Plugins
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AddToAny Share Buttons
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Co-Authors Plus
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Database Reset
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Flare
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Flickr Photostream
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Floating Social Bar
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Google+ Interactive Posts
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MashShare - Social Media Share Buttons, Social Share Icons
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Professional Social Sharing Buttons, Icons & Related Posts - Shareaholic
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Publish Confirmation
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Quick Featured Images
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Quick Flickr Widget
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Quotable
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Schema - All In One Schema Rich Snippets
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Simple Social Icons
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Social Sharing (by Danny)
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Socialize
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Subscribr
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Thirteen Colors
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TT Guest Post Submit
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Twenty Eleven Theme Extensions
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Twenty Thirteen Header Animations
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Use Google Libraries
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WP Go Maps (formerly WP Google Maps)
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WP Shortcodes Plugin — Shortcodes Ultimate
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WP-PostRatings
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XML Sitemap Generator for Google