public final void deleteBBSThread(final int localthreadid, final int posterID, final int guildRank) {
        final MapleBBSThread thread = bbs.get(localthreadid);
        if (thread != null && (thread.ownerID == posterID || guildRank <= 2)) {
            changed = true;
            bbs.remove(localthreadid);
        }
    }