[mburns]

Would Tim Berners-Lee or DJB fit as a good example of #4?

[nl]

DJB would. I was thinking of http://www.google.com/search?q=Dmitriy+Vjukov when I thought of that category. Also Tomek (http://www.topcoder.com/tc?module=SimpleStats&c=coder_ac..., T.O.M.E.K from http://www.mcplusplus.com/downloads/)

Tim Berners-Lee is maybe 3, or maybe category for people who "got lucky once and are now famous". Or maybe there should a separate category called "semantic web specialists". That may or may not be the same category as "Don Quixote, and other windmill tilters"