Your analogy doesn't even make sense.
We knew MaDa from Massassi, and we had a memorial on Massassi.
They knew this person from WoW, and held a memorial in WoW.
Having Massassi's community hold a memorial on another forum would be like them holding a memorial in EQ2 instead.
If, however, you were trying to make the point that it was an open environment and that anyone could interfere with it, then that, too, is an invalid argument, as the Massassi forums are open to public registration. Granted, we lack the population of a game like WoW, but the principle remains. If someone came and caused trouble while we were paying our respects to MaDa, it would not be funny, and the offending parties would most likely be banned. Yet you make fun of another community paying their respects to one of their departed members, and laugh when someone ruins it. There's no difference between the two, and to say that one is acceptable and the other isn't is completely hypocritical.
Moo.