I never see these accounts when using the Twitter website, but always when I'm using Tweetbot. I'm guessing there's a layer in between that clears it up for Tw

I never see these accounts when using the Twitter website, but always when I'm using Tweetbot. I'm guessing there's a layer in between that clears it up for Twitter's own tools, and the third-party tools are left to clean up the stream themselves. (On the other hand, Tweetbot has no in-stream ads, which mean both of these things are happening in the same "post-processing" layer.)