What are the different types of organizations?

Please post your 300-word response to the following discussion question. (NEED BACK TONIGHT B4  12AM EASTERN TIME)

What are the different types of organizations? What is an example of a significant innovative organization within the service sector (Google, Yahoo!, eBay®, etc.)? Why? What organizational type is representative of your organization, and what are the opportunities for innovation within that type of organization?   Note: there are two types of organizations for the purpose of our discussions.  See your  readings.  These are not “forms” of organizations (sole proprietorship, partnership, corporation, etc.).