If your listing or article displays as a block of text you can usually fix it by following these steps.

• Clicking on the listing or blog you want to fix
• Click 'edit'
• On the edit screen pick 'Input format'
• In most cases, picking the first option, 'Filtered HTML' will fix your page
• Scroll down and click the Submit button to save your change

If you know html or php you can have more control over the look of your listings. Click the appropriate button.