Very good thoughts! One promising thing about the Internet is the ability to form communities where local interest is too small or sparse. Currently these commu

Very good thoughts! One promising thing about the Internet is the ability to form communities where local interest is too small or sparse. Currently these communities tend to be fairly stable and hoping to grow. But what if there were a way to facilitate ad hoc communities of people at a similar learning level, all going through a particular subject at the same time? You've given me some things to ponder. Thanks.