[Dr_Jefyll]

Rather than buying suction cups (for which I would subsequently have had no further use), I managed very nicely by using just a couple of strips of packing tape. Each strip formed a "handle" -- one on each side of the screen, same as you'd do with the suction cups.

There are various ways to manage this, I suppose, but in my case each strip began as a roughly 16 inch length. I folded it 180 degrees at the halfway point and allowed the two legs to stick to each other for about 4 inches. Then the two legs part company, turning 90 degrees but in opposite directions -- and that 90 degree point is where the tape meets the surface of the glass.

[abakker]

This works, but it is risky since I've seen it damage the screen coatings on some of the iMacs. Some of the older ones seemed to have softer coatings.