what happens if you get reported for something

[Causality]

like selling my house in party finder what would happen or trade cancelling someones teleport

Probably nothing for trade cancelling someone.

The House selling Yoshida has directed people to report.

[Souljacker]

Unless posts\character mysteriously disappears.....

It's pretty clear that the GMs *do* take action on at least the most egregious offenders, which I'm grateful for.

Short advice for the OP - just don't be a jerk. It literally gets you nothing in life and people won't like you. You're kidding yourself if you think folks don't remember the players who are generally unpleasant and will make sure not to group with\help them. You really only hurt yourself if you are deliberately trolling others to the point that they are reporting you to the GMs. Trolling people for the 'lulz' is at best immature and people won't like\help you, at worst ban-worthy and you won't get to play at all anymore. Just don't be that guy.

[FinaSel]

I know that GMs do take action if they feel the report is justified.

I've been banned from the forums once because I made a statement that someone interpreted as "targeting a group of people who speak a particular language", although that wasn't my intention whatsoever.

Someone simply read too much into it and reported it, and a GM thought it was inappropriate. So I got a 2 week ban.
So yeah, you can never be too careful because you never know what someone might see as "reportable". Or what GMs consider an "offense", even if it seems completely innocent to you.

I have also reported someone in the game for having an inappropriate character name. While their name wasn't a curse word per se, it was not suitable for the rating of the game, and their name made me feel very uncomfortable.
He was a mentor, but because the server is 99% Japanese speakers, no one probably knew the meaning of his name. But I can understand a lot of English, so I knew. As a female, I felt sick to my stomach when I saw that name.

A GM said they would look into it. Within a day his name was changed.

[Anienai]

what would happen or trade cancelling someones teleport

Same thing that happens when you lose the shower fight in Mafia 2.

[WinterLuna]

I'm pretty sure every report is investigated regardless of the severity. Obviously canceling someone's teleport once isn't going to give you the same punishment as selling gil or being offensive, but it's still classed as harassment and you will probably get a warning or ban if you continue doing it.

Not to mention it's completely childish.

[WinterLuna]

Another thing (can't edit my previous post) - like someone else mentioned, often people are banned through misinterpretations or light-hearted comments that are taken the wrong way. I made a comment on the forums to someone that was mildly rude and only in reaction to what the other player said, but it was taken offensively and I was banned for a short time. Just be very careful as words are not easy to interpret via text and also each GM is different in the severity of their punishments.