Valorswolf nothing wrong with posting playthroughs on youtube (tons of people do it....infact I look at playthroughs for games where I am interested in the story to see how it ends but don't necessarily want to take the time to play it myself).

You might not want to talk very much during your playthroughs though. Need to remember that people aren't watching it to hear what you have to say they are watching it to see the video of the playthrough. If you talk to much people will quickly close it and search for a playthrough where the person doesn't talk.