Just a 'noob'y example... It was me posting.
1. TRIPLE posting, way against rules.
2. Watch your spelling.
3. All caps is not acceptable.
4. "What is HTML?" is a non-relevant question - search it on Google.
5. Bugging others to help you is not acceptable. If nobody wants to help, what makes you think they will help after you nag them?
I think there's a few more too.
At least I check for any mistakes I make to make sure that my posts look nice. If you new people are reading this, always double-check your posts: Is it relevant? Is it suitable? Is it offensive? Is it on topic? Am I double-posting? Can I use the edit button? Is there any spelling errors? Am I breaking any other forum rules?