Here's what you may have missed this week:

• New Nail Polish May Prevent Date Rapes - Undergraduates at North Carolina State University are being credited with creating a new kind of nail polish. The polish doubles as a way to prevent sexual assault. The person wearing the nail polish has to use their finger to stir their drink and if the drink has a date rape drug in it, the nail polish will change colors.
• Now, ‘Rice Bucket Challenge’ Goes Viral - Yes, that was "rice" not "ice." An Indian woman has come up with the ‘rice bucket challenge’ on Facebook to show a way to potential donors who want to help the poor. The message has now gone viral on social media.
• Facebook Cracking Down on 'Clickbait' With Update - Facebook is launching an update Monday for users' news feed that will attempt to weed out stories that publish 'clickbait' headlines. The social network says it will evaluate links based on how much time people spend away from Facebook and how often users are sharing and discussing stories with friends.
• Pinterest Rolls Out Analytics to Reel Brands In - A couple of months ago, Pinterest said it would slowly start rolling out an fresh take on its analytics tool. It looks like that’s now happening. The updated tool gives more detailed analytics than its previous version, like what pins are getting re-pinned and how individual pins and boards are performing. Pinterest Analytics is just for Pinterest users with a business account — a feature the company rolled out a little more than a year and a half ago.