Sony's PlayStation "Credit Card" is there any tricks?

They offer a free $50 PSN card on first purchase which I would like but a "free" $50 PSN card is a little fishy. There are no annual fees and 0% intro APR. So whats the catch. And use of the card on everyday products earns you rewards points.

Oh here is a link to there promotion page.

LINK

@alanissak320: **Purchase APR: 0% intro rate until January 2016, between 13.9% - 24.9% variable thereafter. Transfer APR: between 13.9% - 24.9% variable. Cash Advance APR: 24.9% variable. Penalty APR: 29.4% variable. APRs in effect as of 01/01/15 and may vary with the market. Cash Advance Fee: greater of 3% of the advance amount or $10. Minimum Interest charge $0.50.

Not to mention that Sony's branded cards are some of the hardest to get in the credit card industry. They really want a spotless credit history, stellar earnings, etc.

i have the playstation card and I love it. I got the $50 psn credit after I first used it, I use the rewards I get quite often for more psn credit, and as with any credit card as long as you keep it paid off you don't have to worry about any interest fees