The key and value to every system is in its interrelations between it's elements. Shouldn't we create something along those lines?
I believe that the key to knowledge building is in three parts.
1. Creating the right technology based on the right concepts,
2. Finding the right sponsor.
3. Having organizations follow new learning and leadership theories, understand and implement "Systems Thinking" to ensure you can motivate people to contribute (with their knowledge) not because they have to, but because they want to.
Technology always come last to the PST system, Problem -> Solution - > Tools or Technology as opposed to popular thinking now a days where the first thing people talk when faced with a problem is .... technology as THE solution.
We need to start thinking radically different, in order to be successful at innovating and collecting people's wisdom.