User blog comment:RRabbit42/Coping with poor edits from Achievement badges/@comment-474870-20100828183412

OK, I firstly made a blog post to announce them on the wiki. I added a note in the welcome message saying any spamming to get badges will result in an immediate block. I blocked users for the usual vandalism time on my wiki, two weeks. We don't get many spammers, only one or two every few days. And, we haven't shut them off yet.

That answers all your questions.