The total grid size of Second Life's open source spinoff OpenSim is about to shrink significantly, HyperGrid Business reports, because OSGrid, the largest grid running on the OpenSim platform, with 11,919 regions, is "getting a long-overdue housekeeping": "OSGrid president Michael Emory Cerquoni... said that as many as 50 to 60 percent of all OSGrid regions might be purged during the upcoming housekeeping." Why? Inactivity:

When a region hasn’t connected to the grid for at least two weeks, its map reservation will be erased, the region will no longer be counted as an OSGrid regions, and its spot will become available to other region owners.

Ironically, this news comes in a post headlined "OpenSim exceeds Second Life private regions", but as SL media maven Kimberly Winnington notes, the imminent purge of unused regions makes that title misleading.

But this retraction of OpenSim usage isn't surprising: