The FNN stuff we (myself and my advisor, Hank) started developing in 2000 has lead to all sorts of stuff. Too much to go into right now. As a side note, that little $10K cluster from Oct 2000 was called the KRAA Z-MP and actually turned out to be a real pain... Someday I might write up an article about what not to do when building a PC cluster... It's been decomisioned and several of the nodes are now workstations in one of our labs.
The cluster worth checking out is our new 128+4 node creation KASY0 which we built this summer.
FOAF updates: Trust rankings are now exported, making the data available to other users and websites. An external FOAF URI has been added, allowing users to link to an additional FOAF file.
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If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!