I used to be able to open up iChat and screen share with contacts. I don't see iChat is available any longer and it was very easy. Since iChat is not available how do I easily screen share with another iMac? I've looked in Facetime and I don't see an option to screen share. I am able to screen share with my own computer back at the house very easily with "Back To My Mac" but I'm trying to screen share with a friends computer (iMac).