I found creative common-license examples at sites such as:
- http://icondock.com/free/vector-social-media-icons and
- Comparison of Komodo on the left and Icon Dock's version:
The icons could be used either to link to your site's profile. Alternatively, the icons could be used to let an end-user share your content to their profiles. This can get your "market buzz" and maybe have some awesome content of yours go viral.
You can also use a service or option to aggregate a several sharing options into a small widget on your site.
The following article covers add this, add to any, share this, and tell a friend. And this is only a short list of the aggregation tools, I won't go into the hundreds (thousands?) of different types of social networking sites plus their user-created communities.
What do you use to (and how do you) share your content? And do you use icons to link to your profiles?