There are rules on RYS and there is a way to delete postings that are violating the rules. It only takes 4 flags to remove violations. Go flag em.
ALL Puppy sales are prohibited.
Pet sales over $100-Prohibited
Spam-Such as "i really need to "sale" my stuff"-Prohibited.
Passion Party-Prohibited
Work from Home-Prohibited
Want to buy pets-Prohibited
Rants and Raves-Prohibited
On Post Child care without stating "Lisenced" Prohibited
All that crud from Shoesby.com is a scam its counterfiet-Prohibited
All it takes is 4 of us to flag it and its gone, dont let your neighbor get ripped off, and dont let puppy mills advertise on the site, go flag it. You can beat the scam artists by keeping off the site. 

Posting the same item 2, 3, or 7 times is spam, prohibited 

Flag, flag, flag... 

Most of the people on here are well versed on RYS rules.

If I happen to come across something then I will flag it. I don't go out of my way searching RYS to find violations so I can flag them. That is a little excessive if you ask me.