There's nothing special about collaborative knowledge bases that make them immune from scaling problems. You can't use TreeNotation to run Wikipedia. Fundamentally it isn't a database, period. It's a schema for files in a file system.

> Fundamentally it isn't a database, period. It's a schema for files in a file system.

This is false. It is both.

A database is merely an application that provides an interface to structured data on disk.

I know a thing or two about databases, having contributed to a few of the larger open source ones.

There's a lot more to TreeBase than is on the website right now. As the website says "We have been using TreeBase for over 2 years in systems with millions of rows and dozens of collaborators." For all you know, you may have actually used a website that is powered by TreeBase (well, a TreeBase application written in a different host language, but the file system semantics are the same).

Not sure why you're getting negativity. Though I haven't gone back and reviewed your past comments, I don't see any harm in mentioning it here... It seems somewhat on topic and looks interesting for certain use cases.