Does not break HTML validation:
Most social bookmarking buttons will break HTML validation, meaning that it may not display correctly on some browsers. The buttons may look distorted or malfunction on older browsers. Some of the most popular buttons (Tweet, Like, Reddit, etc) will break HTML validation. A unique solution is implemented in Share Post to make these buttons valid HTML. No other plugins can do this.
Different browsers display HTML differently. Some social bookmarking buttons may look fine in your browser, but look distorted in someone else's browser. Share Post was coded to work perfectly in all major browsers; many similar plugins don't even work in Internet Explorer.
How does Share Post do this? Share Post detects the browser that the user is using and displays different content based on the browser. This way, Share Post can display browser-specific codes to work in all browsers.
In conclusion, give Share Post a try and see the difference :)