Sure, as we talked about 2 days ago (42 points, 33 comments) https://news.ycombinator.com/item?id=48983857

22 days ago (123 points, 42 comments) https://news.ycombinator.com/item?id=48740217

And even So Reddit has decided that plain HTML is unsafe (235 points, 12 hours ago, 254 comments) https://news.ycombinator.com/item?id=49005747