A simple method to marginally improve your trade experience

Here's a search of every Normal rarity item currently trading for > 50,000 exalted orbs:
https://www.pathofexile.com/trade2/search/poe2/Dawn%20of%20the%20Hunt/Zn0RMa9SQ

Just load that up and ignore the first few traders, then hit F5. While the initial search has a ton of results you will see that many of the entries are from the same accounts.

I only had to ignore 35 people in order to make this search return no results -- and now I know all of the other bullshit they're probably posting elsewhere will be gone as well.

You can do the same for other rarities/amounts as you deem appropriate -- if you know what the most sought after items are you can even do the same on every inexpensive listings that are obviously fake.