A member of our forum has added an excellent post on how to reduce bandwidth by optimizing product images and website code.

Here's the link:

Optimizing Images and Code To Reduce Bandwidth Forum Post

I use this tool to check my store's load time:
Site Report Card

This is something that every merchant should be cognizant of. Slow load times can kill your sales conversion rate.

Thanks to Modular Merchant for making this great post.

Modular Merchant: Shopping Cart Solution