The signaling mechanism run by the American Economic Association closes on Monday at midnight (but signalers must register by Sunday). Economists may use it to send up to two signals of interest to potential employers. The mechanism is described here, together with some advice for candidates and departments.
My advice to candidates: read the advice, talk to your advisor, think about where to send your signals, but don't stress out about it; signals are just one small factor in your overall campaign. Good luck to all.