Cropping images that appear on the mobile version of your events list will help your mobile site to look better and be more user friendly.
The ideal size is 267px wide and about 80px - 100px tall. By default SimpleTix will re-size your original image to be 267px wide. However you can use the easy crop tool to re-size just the height.
Here's a sample event listings page on the iPhone (before being cropped):
Here's a sample event listings page on the iPhone (after being cropped):
Cropping images are ideal because...
1. The page will load faster
2. The customer will be able not have to scroll down to read the event details (teaser text)
Watch this tutorial to learn how to crop images for the mobile version: (You will need flash and speakers / a headset)