Linkpedia

You will have to excuse the play on words, but Linklaters are the next firm to start using Social Media tools with the release of an in-house Wiki called Linkpedia "Linklaters staff will be able to add photos, text and weblinks to Linkpedia themselves and will also be able to comment on entries that have been posted by their peers. The content, however, will all be firm-related."

[Hat Tip - Scott Vine at Information Overlord]