The graph shows who introduced who to the list. People shown in grey are no longer on the list, and the graph is far from complete, with many ex-members omitted. Some people have no parents, either because they joined when the list was open, they weren't introduced by anyone, or I couldn't find who their parent is. Some may have heard about the list from a number of people before finally joining, but only the final introduction is shown. Last updated 25 July 2006.
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