User blog comment:PlantyThePottedPlant/Random Topic Blogging II: Electric Blogaloo/@comment-1659929-20120729195529/@comment-1821137-20120729223112

I chatted with the VSTFs today and they told me that they indeed use bots to do most of the Cross-Wiki jobs, so it's the bots that block people when they sense there is suspicious activity. These bots are just a precaution, I'd say, as most of the people they truly block are spammers. But bots are bots, and they cannot tell the difference between good faith edits and spamming sometimes, which is mistakes like this happen.

I'd say you should do massive amounts of edits at once or add many pages to the same categories in a small period of time to minimize the chance of being blocked.