For much of Thursday and part of Friday, Blogger sites were in read-only mode because of maintenance issues. Content created between Wednesday and Thursday was removed during the outage, but Blogger says it will be back up soon.
Just before 1:30 p.m., Blogger Tech Manager Eddie Kessler announced that users could once again sign in to their blogs. Kessler also offered an apology and explanation for the blackout.
[D]uring scheduled maintenance work Wednesday night, we experienced some data corruption that impacted Blogger's behavior. Since then, bloggers and readers may have experienced a variety of anomalies including intermittent outages, disappearing posts, and arriving at unintended blogs or error pages. A small subset of Blogger users (we estimate 0.16%) may have encountered additional problems specific to their accounts. Yesterday we returned Blogger to a pre-maintenance state and placed the service in read-only mode while we worked on restoring all content: that's why you haven't been able to publish. We rolled back to a version of Blogger as of Wednesday May 11th, so your posts since then were temporarily removed. Those are the posts that we're in the progress of restoring.