Some common, persistent and annoying things people do at the Sales forum:
1. No domains in title
2. Domains in title but without the TLD
3. Domains in the wrong forum, e.g. a .mobi in Taking Offers
4. S p a c e d names
5. Asking for offers in the Fixed Prices forum
6. Bumping sales threads without any significant info or price change
7. Adult names in regular sales
8. External auctions e.g. eBay - listed under Auctions instead of External
9. Links to a web site listing their domains instead of listing them in the post
10. Linking to an URL that contains an...image with the name of the domains for sale
I think I report at least 5 such violations daily. I missed Randomo's
