Photos, Christmas cards, magazines, invitations people under a certain age are wondering why on earth anybody ever sent anything in an envelope rather than via Facebook, e-mail, the iPad or the web.

ECONOMIST: America��s postal service will begin to undo itself

Like printing your first name on the outside of an envelope or at the top of an e-mail.

FORBES: Personalization Goes Beyond the Name Game

So, should I open the envelope from Rockefeller, where my apo E status was determined by Dr. Breslow's laboratory as part of a research project?

WSJ: A Gene Gives a Hint Of How Long a Person Might Hope to Live

"Jeff pushes the envelope--and me, " Ballmer says in an e-mail.

FORBES: The Humbler One

TaxACT has pushed the envelope in the industry since it came onto the scene, forcing competitors to match its free e-filing options and lower software products.

FORBES: Antitrust Suit Filed Against Top Tax Preparer H&R Block