jooShare is a Joomla plugin that automatically adds social share buttons to your articles, making it easy for your visitors to share your articles.
It generates tags like description, title, images directely from your page content.
Supported social network:
You can enable what social you want to show and what categories will be interested.
You can also config a default image to be taken if your page doesn't have an image in its content and the position where the social buttons will be showed.
jooShare generates shorten urls using goo.gl (requires Google App Key free released by Google).
You can also enable or not the Comments plugin and select the number of posts to show.