I think you meant: strong passwords will be truncated down to 8 chars, making them weak.
See http://news.ycombinator.com/item?id=2003888 or http://news.ycombinator.com/item?id=1545576 for examples of how fast certain types of brute-force attacks have become.
I think you meant: strong passwords will be truncated down to 8 chars, making them weak.