It actually goes beyond blogging. It adds grid management tools to WordPress, including access to avatar creation and search management. And it's based on Olivier van Helden's OpenSim helpers.
One planned feature is the integration of the search engine of the Hypergrid events calendar 2do which even comes in the shape of an in-world panel showing the next events to happen on participating grids.
Both projects are sponsored by the Speculoos World grid and promoted by its grid admin, Gudule Lapointe, who has presented both at Hypergrid International Expo tonight.