Got to the Cover Depos tab at the top of the main page, hit on the red dot on the map closest to Pasadena, join the group, then a tab will appear to "Send Message to the Group" and you can send your email blast about your job offer there. There are close to 400 reporters in the LA group.
If you have work you need covered on this website, send out an email blast to the area you need covered. Hit on "Cover Depos" at the top of the page and Join the groups on the map and send your messages. Leaving messages on the first page won't help much. Most reporters in this area rely on getting email blasts of the work.