Verified answer

I use 960grid although I do use their system sometimes to create custom grids

there are many reasons why I use it, one is because I can pass and work on to employees and they will know the coding I have used.

When you normally build a site without 960 you make up names for the divs but if you use 960 the layout is all standard making adjustment and changes faster.

that's not forgetting the cross browser advantages and the design advantages,,

there are many reasons to use it and not any as far as I am aware not to use it.