If a critical mass of teachers (lets say, for the sake of pulling an arbitrary number, 40) start creating lesson plans on a sufficiently regular basis, I’ll commit to setting up and hosting a site that collects and republishes the content. Heck, I’ll even commit to writing up some best practices to make sure your lessons can be peeled off and aggregated separately from your other content.
And, at the risk of stating the obvious, this site will be ad-free, and yes, it will run on open source code.
Thirty-nine more hands. Get ’em in the air, people.