How the decay of Wikipedia can be measured
The decay of Wikipedia can be measured by expressing the chance that it will fork.
That’s all I’ve got.
A fork is a term from the community of open source programmers. It means a split of a project into two distinct projects working from the exact same code base. These splits often happen for philosophical reasons, with opinions divided over the course a project should take.
See also: Oh goody, I’ll dance to that (about the fork of Mambo into Mambo and Joomla).