Currently, you can share a post on your choice of posts and it will pop up a window with some options:
The tweet, for instance, looks pretty normal:
But what I would suggest is the following:
- In Admin somewhere put a sharing section which has space to add your site’s/company’s social handles so that when information is shared it is included in the post, which is pretty common practice. For instance, it would say “via @discourse” at the end. This could/would apply for Facebook and potentially others.