"The idea that all of the world should be measured in dollars to stockholders is actually a relatively new idea. It used to be that we thought that businesses had their purpose. Your purpose was to be making newspapers or fountain pens or whatever. And now we act as though the only purpose of a business was to enrich the people who trade it on Wall Street… Of course you’ve got to have profit, of course you’ve got to support your ownership. But that’s not why we’re doing it. We’re doing it because publishing a newspaper is a crucial thing to be doing." ~Andy Barnes
Companies use to be temporary, created for the public good (like building bridges) and did not exist to make a profit.
Seams like Automattic went the right way with using WordPress and their P2 Theme for internal use. [0] Departments, groups, or people can have their own "boards". Within that you can write posts or comment, mention people. The P2 theme is great for one liners to walls of text and pictures. Plenty of plugins to expand as need desire...