Most frustrating thing about MeFi: How oddly disposable it is. I mean the discussion, not the links. When you skip it for a few days, and come back, the links still work but the discussions are dead. Forty-eight hours, and dead as a doornail. I know MeFi is all about fresh links -- but still. Would it be so bad to allow for sorting by recent comment on the customization page, so the sorting persists between visits? Or is this already possible, and it's just that no one does it?