Let's relate this application to a job application. The chat log is improving, as I can see what people are mentioning above. Now let's pretend that the "chat log" is an area where you respect others, and then you start swearing (mine isn't much better. It's cancer, but I understand the need to have a bit of fun, or really get annoyed by someone. I've had those moments). The stuff you say in the chat log can be relatable to the stuff you say on your friends in social media, which your boss will most likely check. If he sees you swearing, and getting mad, he will not think of it in your perspective and will think that you are a rude person, and will therefore be unfit for the job, yet if he sees that that's happened a while ago, and you've improved much better now, he will be more likely to accept you than before.
A few more things to mention. Accepting constructive criticism. I understand how it's hard to accept it, and I find it hard to accept it too, because I sometimes think that I'm perfect (I mean, I know I'm perfect; haha), but people will point out your mistakes. When you write an application, it's hard to mention things you've done that wasn't right. What's happened has happened, right? Well, not exactly. As
@Fish-Related Crimes mentioned up above, if you're a convict, people most likely will not trust them, yet the convicts try to get rid of those negative things in their life. Take Frank William Abagnale, for example. He went to prison for 5 years for being a conman, but now he runs a consulting firm that helps agencies debunk fraud.
Now I know that that's an extreme example to relate to this, but accept some of what the admins are trying to point out, and accept it. That's all I have to say.