[germinalphrase]

I've always felt that Teacherspayteachers is interesting, but it can’t be a general purpose curriculum tool. The marketplace model also distorts (in my mind) the incentives for sharing while limiting buyers/users to the infrequent, desperate and/or inexperienced. The relationship between teachers is purely transactional, so there is no collaborative development or improvement of the content over time. Likewise, it is reliant on discrete documents, which I find inflexible. This inflexibility might not matter if you're working with young kids and just need a fun activity/game - but (as a high school teacher) it is a significant hinderance to using this platform on a regular basis.

All that said, sincere props to Paul Edelman for developing a strong community around the site.