When this goes out, I'll be at the CSS Working Group meeting in Toronto, for three days of thinking about CSS. I started to write an intro, with my concerns about some of the really interesting things that I am seeing people doing with grid. It became a post in itself so I posted to my blog, and it is linked below. However, I feel that we are increasingly seeing things which are great ideas, but need to be used with a lot of testing and caution. Some of the things I've included today fall into that group.