Flash Trading

Flash Trading is a way to scam, unless you want to have fun with friends. Basically you put a bad item on trade and someone flashes (trades you really fast and cancels) you and you have to try to accept. They might accept and not trade back, and that's how you get scammed. People think you should so it for like 4 seconds but I believe like 1.
Sometimes they flash something even worse and you accept not even looking. That way, you're scammed too.
Here's a photo of Julian2 flashing. He isn't a scammer so trust him.

I'm sorry it said Julian2 password, I accidentally clicked that and saw this photo.

Also, there is trust trading. One Jammer put a bad item on trade and the other person normally trades a good one. You have to be trusted and decline. If not, they scam you.

Don't trust trade, believe people who say flash me, or best no trade or decline. That's how I got scammed.

Also, never go to gifting parties and gift first. Wait for people to gift you, then gift them back. 

Jammer -_-