Ето? Sorry, mate. No clue to that. Perhaps this is how you hear the word это.

As for Internet talk... You have to realize that Internet brings a lot of people together. People from different parts of the country, with different speaking habits, different levels of education etc... More than that, sometimes people intentionally make mistakes or mispronounce words as a way of cracking a joke.

As for the last part of your question, people make mistakes. Yes, native speakers make mistakes now and then when they speak. Perhaps, that was what confused you so much.

If it's okay, I'd like to make a suggestion. Maybe you could support your question with some examples of what had confused you? Audio/video files or such