I love how Ohloh estimates the value of open source projects. For instance, here’s their take on the Magma MUD codebase:

I believe Envy is just over 100k lines of code. At the average developer salary of $91,000/year, about $1 million in “value” was created by the Basternae II rebuild team. Value that, due to the DikuMUD license, could never actually be “claimed” through any means.

Just a curiosity, really, but still fun.