Tweet Tweet (maybe because of sharebar-wordpress-plugin)

If you tracked down that plugin as the source of your problem, you should probably tell the author of that plugin 😉

I did take a look and I can confirm that the “Tweet Tweet” gets added. While I’m not sure why Sharebar behaves like this, I came across other support requests regarding this.

• http://wordpress.org/support/topic/plugin-sharebar-adding-code-to-excerpt
• http://wordpress.org/support/topic/trouble-with-excerpt-function-grabbing-sharebar
• http://wordpress.org/support/topic/tweet-tweet-showing-up-in-google-serps

The first post has a solution how to fix this, but it didn’t work for me, which might be related to the 10 PHP warnings Sharebar’s option page produces on my blog (however, I’m using WordPress 3.9 beta 3!)

Another solution, though not the best option to go with, would be using custom excerpts for your posts.

I’d still report this problem to the author of Sharebar. The problem you described shows up whenever a plugin or theme is using the standard WordPress function get_the_excerpt, hence it is not caused by OGraphr.