Answer:

spam

Answer	Crossword Clue
SPAM	Unwanted E-mail
SPAM	Canned course?
SPAM	Junk e-mail

SPAM	Junk E-mail
SPAM	Loaf meat
SPAM	Unwanted mail
SPAM	Tool used by phishers
SPAM	Roughly 70% of all email
SPAM	Filtered stuff
SPAM	Cyberjunk
SPAM	In-box clutter, often

SPAM	It gets filtered, usually
SPAM	Hormel product
SPAM	Unwanted e-mail
SPAM	Junk email
SPAM	In-box clutter
SPAM	In-box clogger
SPAM	In-box junk
SPAM	Inbox junk

SPAM	E-mail often filtered out
SPAM	Product sold in tins
SPAM	What a filter might catch
SPAM	What some filters catch
SPAM	Canned item since 1937
SPAM	Meat in a can
SPAM	Oft-blocked ads
SPAM	E-promotions, e.g.

SPAM	Computer junk mail
SPAM	E-mail box clogger
SPAM	Hardly a Net asset
SPAM	Cyberannoyance
SPAM	Online filter target
SPAM	Online nuisance
SPAM	Unsolicited e-mail
SPAM	Costly Internet problem

SPAM	Cyberjunk in your box
SPAM	E-junk
SPAM	Hormel meat product
SPAM	Junk mail in your e-box
SPAM	Oft-deleted message

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.