they do so that's an application of machine learning and sometimes some of these examples are also going to be using deep learning so it's hard to send a separate the two because you never know a lots of things that can be done using pure machine learning algorithms can also be done or are done with deep learning algorithms so the next thing that they do is spam classification so you see on my comments this is an YouTube studio but I have likely spam so they have they know when a couple of comments are going to be spammy so these