Firstly what are black marks; in Runescape, if you do something bad and break the rules, JaGeX will give you a black mark or more - depending on the offense.
To find the Runescape rules so you don't break them visit this website and have a look around.
Now, below, in dot form is a list of things that will help you avoid black marks.
- If a beggar comes a long and starts to annoy you, the only action you should take is put them on your sad list and change worlds
- If there is an argument, avoid it because you might be the target and get teased resulting in you becoming angry and getting into trouble
- Try not to ask people for their e-mail, it sometimes can be hard because you want a friend's e-mail
- Also, be more careful, if you want to tell your friend or someone about your fan site or forum and post a link, you can get reported as that is considered advertising
- Avoid getting angry, mainly when you die in a fight
- Don't report someone if they didn't do anything, simple as that
- Don't ask people for their passwords, sometimes people ask you to help them, and then you ask for their password so you can help them and then you get reported
On a side note: Read over the rules time to time, this will help you not to forget the rules, and if you want to advertise, join a forum of this same topic and add the link to your signature and start posting, remember to be a good member on that forum because you will get lots of friends and lots of people on your forum.