Our hosting provider Media Temple had a massive outage over the weekend that took some 15,000 sites offline, ours included. Things are mostly back to normal now (this blog is missing a few images which we'll be restoring today, but otherwise everything is where it should be.).
The outage hit just as our competition was ending, so we've extended the deadline to Friday, May 8th at 11PM. Entries which are stored on a separate server were unaffected.