Flock is lot more than a publisher that helps you to publish multiple blogs at the same time. It is termed as the Social Networking browser & a browser suitable for bloggers & for publishing.
Its a full fledged browser much like Mozilla Firefox with extensions & plugins that could help you make the best of social networking websites. Flock has a new approach to how people use and collaborate on the web and simplifying social and web-based applications by integrating them directly into the browser.
"When using Flock, people can easily discover, access, create and share videos, photos, blogs, feeds and comments across social communities, media providers, and popular websites."