Related Clues:

• Something trending online
• Repeatedly reposted item
• Hula hoop, e.g
• One likely to lose intensity shortly?
• Image etc. that spreads rapidly on the Internet
• "In" thing
• Many a Facebook repost
• Beanie Babies were one
• Beanie Babies, e.g
• Passing web fancy
• Enthusiastic ''I do!''
• It's hot for a while
• It's in one era and out the other
• Flash in the pan
• Many a meme