Buffer has launched their own share button.
The service lets you share a tweet or a status update for Facebook but with a difference.
These messages are posted at pre-defined interval. The idea is to prevent multiple posts in a short period of time that can annoy your friends and followers.
This share button enables you to share a web page easily through your Buffer account. It would share the post on the accounts that you have enabled.
Here is a sample button!
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Buffer for Facebook launched