I personally use a "dummy" email for whenever I sign up to something that looks interesting. Only after I might use my real e-mail. But to answer your question I prefer e-mail.
Sony's decision might also be a good marketing plan. Remember when they took down the Twinikies and everybody wanted to buy them and then after a few months they put it in circulation again.
I believe Sony is trying to'milk' the fact that they got hacked and make some profit out of it
Yea, but medium is mostly stories . I wanted something similar with Twitter that will show news in real time and give users the power to write them rather than big conglomerates like CNN or fox.