There is a bit of history behind Eupedia. Several years ago it was part of Jref, a Japanese forum (the link is at the top under the banner). Due to its subjects and other matters which are now water under he bridge, Eupedia split from Jref to form a sister site instead of being part of Jref. Some members did post on here for a while, but the main reason for them joining originally was to be part of Jref.
If you look back you will see that older members have an account here as well as Jref, myself included. As most stayed on Jref the traffic here dropped down to only a few posters. As I as already a mod on Jref, Maciamo (the admin), kept me as a mod here. As time has past new members have joined and slowly the traffic has gone up.
We also had a problem with multiple spammers at one point, which didn't help matters. Thankfully we have managed to cut down on that, but we still get the odd baka spammer.