UPDATE 11:22am (Pacific): Holly "Windstalker" Longsdale tweeted: "We are testing our fix for the broker now and are preparing for hotfix. Still looking into the chat issue."
Today's patch introduced a bug that has rendered the broker nearly unusable. Any item excluding equipment displays no name on the broker, causing it to be unsearchable. The UI you use has no impact, so don't rush and begin swapping UI pieces trying to fix it.
This problem is listed in SOE's Top Known Issues and will hopefully be fixed very soon.