Government ordered Weibo, iFent and AcFun to 关停上述网站上的视听节目服务 stop the video and audio programme service because of not having license [1].
So what's video and audio programme? It has a definition, but in practice it has to be interpreted some way. That's why regulation can GET tight sometimes. China is complicated.
I have been running a live streaming app here in China for two years.
The title of this gets so wrong - China did not ban livestreaming. Yes, the regulation of livestreaming services gets very very tight recently, we have been fined due to inappropriate content.
The website mentioned in the article like Weibo, AcFun are not about livestreaming, they're YouTube-like video sites. You need special license to run YouTube-like video sites, just the license is almost impossible to apply for non state-run company. There are only 500 something licenses ever issued, you need to acquire a company that have the license, surely the price is extremely high due to scarcity.
I've built an anti-spam system for Delicious.com using Naive Bayes classifier with a really huge feature database, think tens of millions, mostly tokens in different parts of the page, those features are given different weights which contribute to the final probability aggregation. The result was similar to what the OP achieved - around 80% accuracy. The piece of work was really interesting and satisfying.
Thanks for pointing out the concern. Some permissions are not needed indeed, I'll change the twitter oauth settings. But my web app really doesn't do anything other than pulling in the basic user info though.