Others may be dead or no longer on-line. You should be able to find other links to live cams through most of the ones linked on this page. Cam software sometimes does weird things to your browser. Don't worry about it. Just re-load your browser and continue.
Most TV stations provide the most reliable views.
Some times althought it appears dark, it's just extremely cloudy. North view from the southwest side of the O'Connell Bridge. Click the Dublin Update icon after you look at the live camera. You'll get the rundown on the local scene. Live Camera outside downtown Edinburgh, Scotland.