A wiki barnraising is a communal process of creating a large number of wiki pages/articles in a short period of time. Taken from the concept of “barnraising” which occurs when a community actively decides to come to the same place at the same time to help achieve some specific goal. Making the impossible possible. It’s pretty much impossible for one person to raise a barn.
And just like wikipedia, the definitions over at gene@pedia are available for you to link to in your blog posts. I find this helpful when I am mentioning a topic such as Tombstone Tuesday - I never like to assume that every reader will have heard about the topic.