Although, as an active member of the community, it’s nearly impossible to have missed this huge issue, I think it’s very important to warn people for this.
What happened is a large case fraud in which apparently one user (under multiple names) scammed several members of DeviantArt community. Leaving some people as much as $3000 in debt!!! Money they, most likely, never see back.
Even though the user is banned by DeviantArt now, there’s no reason why it won’t happen again.
After all, the problem is caused by a loophole in PayPal’s rules. So basically everybody that’s using PayPal for it’s business (and that’s a lot of us) is at risk.