The grid techniques help to define content regions and to help separate your layout from your information / data. Tables were created so that you could layout

The grid techniques help to define content regions and to help separate your layout from your information / data. Tables were created so that you could layout out tabular data / information for presentation. There hasn't been much in the area of css frameworks besides for YUI and this framework is based on the work of some well-known designers. The nice thing about this and YUI is that it does help with consistency from browser to browser and it gives you a similar vocabulary to use. I'm sold on the grid technique in general but I'm not sold on either YUI's grid.css or Blueprint's implementation but they're both very good starts.