Support for the implementation and development of ActionBarSherlock is available in the following places:
Post a message to the Google Group about ActionBarSherlock. This will allow myself as well as other users of the library to assist you. It will also serve as a catalog of previous questions and announcements which may be useful. Please DO NOT post general questions about using the action bar APIs.
Like Google Groups, this will allow fellow users to assist you solve your problem. This is also a more approriate place to post general questions about the action bar API.
If you have found a bug or want to suggest a new feature then you can create an issue on the GitHub project.
You may also contact me directly if the above two options are not sufficient.
If you are looking for ways to support the development and maintenance of this project there are various ways to contribute both directly and indirectly.