The good people at Motio have another interesting blog post about applying IBM Cognos Mashup Service. This title of this post is "Web Portal Integration with IBM Cognos Mashup Service". The post describes a solution that uses the REST interface of IBM Cognos Mashup Service. The article includes using the authentication service to complete log on, which is often overlooked in introductory explanations. Blog readers should also be aware of the SOAP interface to the same operations, which might be more applicable to your application, depending on the technology that you are using.
Thanks to the Motio writer for this example, which you can read here. Let me know if you have any questions by posting a response to this blog post. I would welcome discussion.