Our host experienced server difficulties earlier today that resulted in disabled write access on our account. Two components of our site -- the blo.gs powered blogroll and del.icio.us powered link log -- require write access to work. Neither of these services were working today. The issue was entirely with our server, not with either service or the scripts that power them.
Incidentally, the outage did bring to light a shortcoming of our del.icio.us script's error-handling that we've now fixed.