Facebook on (June 7) began rolling out its App Center, filled
with personal recommendations for both Web and mobile apps. In all, 600
social apps are available and they're all free.
You'll recognize all the big names — Pinterest, Instagram, Viddy — but
the new center makes it easy to discover apps you might not know about.
How about Wattpad — a social hub for budding novelists or Postagram that
turns your Facebook photos into postcards and takes care of the mailing
for you.