There's really too much for any moderators on the board to keep up with manually, I feel bad for them, haha.
When bots start targeting a board to this extent, it means there needs to be another layer of authentication of some kind, either by captcha image (which doesn't always work because sometimes bots can detect those) or "prove you're not a robot" question. Because they're already requiring us to log in, and that alone is not deterring them.
ANYWAY just ignore it if you can and don't post on them because it bumps them, and obscures the real topics.