"Traditional site flows of boxes and arrows aren't detailed enough to paint a clear vision to others. You need visual site flows that show the basics of how a page will look. This gives your team a better idea of what you'll design, so that you can better meet their expectations."
Unsemantic is a fluid grid system that is the successor to the 960 Grid System. It works in a similar way, but instead of being a set number of columns, it's entirely based on percentages.
For instance, if you want a 50% wide column, simply use class="grid-50". There are grid classes for multiples of five: 5, 10, 15 … 95, 100. There are also grid classes for dividing a page into thirds: grid-33 and grid-66.
I was planing to make a plugin for JPEG images as well. But until I do, You can work your way out with these plugins...
CW Image Optimizer - http://wordpress.org/plugins/cw-image-optimizer/
EWWW Image Optimizer - http://wordpress.org/plugins/ewww-image-optimizer/
WP Resized Image Quality - http://wordpress.org/plugins/wp-resized-image-quality/