Highly populated servers vs. low population servers

[Artamie]

I think lamia is a low pop server. Our crafting market crashed for an entire 2 weeks because of 1 person.

Also 2 fc's selling titan kills pretty killed any titan groups in MD. I ended up buying the kill myself because . . . literally nobody else was looking for titan. And I gave up df after 3 days.

This kind of stuff would never happen in a high pop server.

I've been wondering for awhile but what exactly did this person do on to crash the market on Lamia? Sounds pretty serious o.O