A user-driven system does not have value unless users contribute contents. It is good news that 80-20 rule is observed in this case (it is enough to have 20% of the users as active contributors and rest 80% can be passive readers). However, it is very difficult to entice this 20% users. It is not enough to have an easy-to-use interface to ensure that users will contribute – users simply don’t care. The blog post mentions some important tactics to deal with this.
It is even more difficult to entice users into contributing structured data. The associated cost is higher than that for unstructured contents. So the benefit also has to be much greater. We need more tactics for enticing users to contribute structured data.