This is a new cleaner, better rounded version of Titleless (with a new name because the old one was a bit of a mouthful)
I find titlebars to be a bit of a waste of space, all the info that I need is in the window list and I use Alt+drag to move windows and then Alt+1,2,3 as minimise, toggle maximise and close respectively (I set these in gnome shortcuts).
This gives me a chunk more screen real estate and a much cleaner overall look IMHO.
Resizing behaves a bit weirdly thanks to a bug in metacity (note it's fine in compiz). Alt + Middle mouse works perfectly for resizing.
Also please justify any votes, it's really annoying when people vote things down without saying why.