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Since there are so many of them that it causes mind numbing confusion just to find the right one *cough* maybe a list of these rare breed of MMOs could come in handy. In my long search to my dissapointment I only found these:
Age of Conan (1x official PvP-RP in germany; thats it afaik)
Everquest 2 (not sure about that one; to long ago, to shortly stayed)
Istaria (-thanks to Ravik )
Are there any more in this ocean of MMOs? You saw it, and its still Online? Just tell the name.