Okay, this isn't the biggest news you'll hear from Yahoo this week, but bear with us -- it's important if you still rely on Yahoo for your messaging needs. The internet pioneer has released its long-in-development redesign of Yahoo Messenger for the desktop, giving the software both a much fresher look and a handful of big new features that you don't always see in personal chat clients. You can unsend messages, for example -- good for those overly hasty reactions or correcting mistakes. You can also search for GIF replies (much like you might in Slack), like posts and share numerous photos at once just by dragging them into the conversation.