JigsawBox – created by Nicola Bird for coaches, but don’t let that stop you. Let your imagination run wild.
Udemy – your place to learn real world skills online. And teach too, of course.
DailyOm – specialising in Mind Body Spirit content, pay what you want (love this one)
A membership plug-in e.g. Wishlist Member on your own website
Ning – like the 30 Day Challenge itself. Build and cultivate your own community.
You pays your money and you takes your choice. And there are many, many more. One will be right for you.
Old hand? Which one do you use, and why?