Dave Snowden has written an excellent piece, aptly titled: If you try and set targets for knowledge sharing you have failed to understand the subject:

Knowledge is a voluntary act, if people trust each other they will share. If they work together and create interdependencies then they will share. If the context requires it even political rivals will share. Good management (including knowledge management) is about creating the right sort of environment and interactions. Creating a set of explicit targets is an abrogation of management responsibility not its assumption.

Need I say more? Well, one more thing – that line up above about creating interdependencies is the most important key to what you can and should do. Instead of saying you want 10 documents on the wiki per week, spend 15 or 20 minutes showing your project team how to collaboratively build documents on the wiki, and before long they’ll have a lot more than 10 documents on the wiki.