Related Clues:

• Current rage
• Trend
• Furbys or yo-yos, once
• Programmer's solution, briefly
• Hula hoops, e.g.
• 'Killer' program
• Temporary craze
• Its popularity is short-lived
• Useful piece of code, briefly
• Passing interest
• Pet rocks, once
• Hula hoop or coonskin cap
• Zoom, for one
• Short-lived rage
• Software program