When moving or resizing windows it's sometimes useful to hold down shift and get "smart snapping" where it snaps to the next closest edge without the intermediate movement.
Similarly, edge resistance doesn't seem to be there either.
I just updated to compiz 0.3.2-1 in development and if I do Alt + Shift + Left click (Button1) it will snap.
Closing per comment 2 as CLOSED/RAWHIDE.