what is the best way to promote a website on your own subreddit?
What about put website link on the banner or the description?It all depends on what the subreddit is about. If your sub has more than about 5000 real subscribers, you'll most likely need to be creative when you promote the site. It only takes one person to shoot off a message to the admins and you could be screwed. It might not happen immediately, it might take weeks or even months, but if the Reddit "anti-evil" team sees that you're trying to make money off of the subreddit, they'll likely ban your account and possibly the sub as well.
these ways definitely not safe, I believe your subreddit will banned soon with these methodsThere are multiple ways depending on niche and how inclined are your visitors to report you.
You can make a sticky post. Probably the safest route.
You can put your link in the menu or on the sidebar (list, links, text, image).
You can make the automoderator automatically post a comment with your link on each new post made.
You can use the settings so that every new subscriber gets a welcoming message... including your link.
Each one can work safely and look natural in certain cases.
What you believe and what is real, aren't the same things.these ways definitely not safe, I believe your subreddit will banned soon with these methods