Have you all checked this out? Here's the blurb from their site:
"Easy to customize. No coding.50,483,006 users and growing. Select a Template 100s of fully customizable HTML5 templates available in every category.Choose yours and create something totally original. Over 45,000 new people join every day Wix gives you everything you need to create a stunning free website, right at your fingertips.We make it fun to create your own site - it's hassle-free, and you don't need any coding skills."
I can imagine teaching students all about audience awareness and purposeful communication while having them develop websites. I think I'm going to register and give it a shot. I'll let you know what comes of it!