If you have a site banned from Google, is it just the site banned or are you banned forever from enterting any other sites?

Is it banned from the engine or Adsense?

If it's banned from the engine, there's nothing stopping you from starting another site up. Adsense, since they have to pay you, it's a different story.

My suggestion to you would be to avoid any things that go against the end user experience for the sole purpose of search engines and try things again.

One of my sites got banned years ago. I am now expanding to another website. I only ask because a few years ago a friend of mine tried making his own account and using the website and they disabled it.

So, you think I should re-apply with the new site?

Wouldnt it be easier if they discover u have been click ur own ads etc just to take back all money sent to u through the past click, so the user thinks twice before click his own ads again.

If you're using the banned site, why not submit a reinclusion request first? See if it's clean, and then worry about GAS after.

There's no point in trying to work with the site if it's banned and they won't let it back in.