Everyone has something to learn. Everyone has something to teach.
School of Everything connects people who want to learn with passionate teachers in their local area.
In order to keep data structures in Semantic CrunchBase close to the source API, I used a 1-to-1 mapping between CrunchBase JSON keys and RDF terms (with only a few exceptions). This was helpful for people knowing the JSON API, but it wasn't easy to interlink the converted information with existing SemWeb data such as FOAF, or the various LOD sources.
The blog carnival must be one of the blogosphere's finest innovations. Akin to an anthology but far more dynamic, a carnival harnesses the self-publishing, self-promoting spirit of blogging. And because the cost of entry is so low (free, actually,) magnificent new carnivals are popping up almost as quickly as new blogs.