Hmm my opinion is that Greek guys are ok (I am also from Greece), except children that are not even 15.... :-X
So Greek children: I dont noou eglis..... pk pk pk.... gamw tin mana sou.... pame pvp.....
Spanish ppl : como estas? adena por favor? habla hubla espaniol? me no now english! They also don't know what is l2 (most of them) and they think that they are Pros cause they have baium ring (in x5000000 servers)
Romanian ppl: They think that they are the team that developed Lineage 2 -.- ......only PvP,PvP,PvP (I never saw one Romanian in an english-speaking low rate server)
Polish ppl: I love them :D I have too many friends from Poland! They are helpfull and they know what is assist :P :P (the thing is that some of them do not know english)
Argentinian ppl: I was in one argentinian clan in a low rate server! They were so kind and so helpfull :)) Also, they were enough organized :o :) But ... there are some Argentinians that do not even know english! they don't know l2 (ony f1+ spam f2) and they say all time malaka malaka malaka, fuck fuck fuck, to village, and some spanish words I don't remember!
hmm about Brazilian ppl: Only that.... BR! It is enough ;D