This week in Crave: The fixer-upper edition

This week, we caught a glimpse of Sony's new Walkmans, got in line early for the cat-video film festival, and begged Marissa Mayer to fix Flickr.

We start our look at the week past by extending heartfelt condolences to the victims of yesterday's horrendous Aurora, Colo., shooting, and to their loved ones. We know many of our readers have been looking forward to the opening of "The Dark Knight Rises" for weeks -- if not months -- and this senseless tragedy floats serious clouds over an event that should have been a pure geek joyfest.

This week, an Internet message to Yahoo's new CEO went viral. DearMarissaMayer.com

In other news we covered this week:

• DARPA found a way to fight fire with sound.

• Meet Sony's new Walkman lineup.

• Is this a Canon mirrorless camera? Maybe, maybe not.

• Dear Marissa Mayer, Please fix Flickr. XXOO, the Internet.

• Google is "out of ideas"? Yikes.

• It's about time online cat videos got their own film fest, is it not?

• Stun gun iPhone case could make for very awkward butt-dials.

• But what kind of future does the iPhone have anyway?

• Sanno, Japan: Population, 42; Power, all solar.

• How wired is South Korea? Super wired, in fact.

• Investment algorithm favors superstition. Take that Jim Cramer.

• Do you stalk your exes on Facebook? Go ahead, fess up.

• Call 1-800-greek-temple. And then call Crave. Or write to us at crave at cnet dot com.

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Force Friday and the best of IFA 2015

Attention Jedi in training: today is Force Friday. Also, the best of IFA 2015, a new personal safety app explodes in popularity, and new 21.5-inch iMacs are coming.

by Jeff Bakalar