To make a good first impression of your blog, you need a clean, easy to read, and well organized theme for it. You have a variety of three column designs to choose from.
However, note that the factor of Fixed Width vs. Variable Width, while choosing the theme.
Fixed Width themes are just a fixed set of dimensions and will show up the same in all browsers. Variable Width themes change to the dimension of the display they are being seen on. But check extreme display sizes to see if the theme “breaks” at certain sizes.
Here are the three column design themes to choose from:
05 Moon 1.0 – This is an excellent black theme, variable width and widget-ready.
Alike Theme – Another dark theme, AdSense ready, fixed width and widget ready.
Blogging Simply – Fluid width, widget ready, loads of space in the sidebars for all the extras you want.
Cordobo Green Park – Variable width, widget ready, easily changeable color schemes.
Fresh Apple – It’s based around a green apple; Variable width and widget ready.
i3Theme – For the Mac lovers, your WordPress blog can look like your favorite operating system.
Illacrimo – Widget ready, smooth appearance. Perfect for a graphic artist site.
Intensive – Google AdSense optimized, good for newish blogs.
Journalized Winter – Variable width, great for someone that likes lots ofinfo on their pages.
Mandigo – A fixed width (800 or 1024) theme that can be two or three columns based on settings on the Options page. Widget ready.
ProSense – Fixed width, clean reading, and available in three different color schemes. Widget ready.
Soccer Theme – Fixed width, widget ready, great for a sports-themed blog.
Talian 1.0 – Clean colors, easy to read, variable width, widget ready for easy customizing.
Ubmodicus – Lightweight, fast loading, widget ready.
Unnamed – While it lacks a name, it has Ajax features (the black area you see is a pop-in) as well as being widget ready. Fixed width.
Zen – Very stylish, easy to read, fixed width, widget ready.