Happy Wednesday! How many people does it take to change a lightbulb? Infinity, apparently. A Massachusetts school's light-controlling software had a bug and has been stuck "on" for 1.5 years...

Highlight of the day

Amazon launched RxPass, a $5 per month all-you-need subscription for Prime users covering 80 generic drugs. It's a big move that competes with pharmacies while acting as a user acquisition hook for Amazon Pharmacy.

Features & products hot off the press

Big tech

• Instagram launches a dynamic profile photo feature 

• WhatsApp ships its macOS app in public beta

• YouTube unveils program for students to earn college credits 

• Lyft adds wait-time fees for tardy riders 

• Google to sunset its Optimize A/B testing solution

General and early-stage

• Zillow introduces instant-bookings for rental property tours

• Tapbots ships a Mastodon client after Twitter killed Tweetbot

• Garmin launches an FDA approved ECG-app

• Mozilla refreshes the reader experience for its 'Pocket' app

• Plum launches its fintech app in five new countries

• Niantic ships an 'NBA All-World' sports game

Other good finds

• OG design. The origins of the 'three-dot' icon pattern 

• Shots fired. US sues Google over ad-tech monopoly

• 2 Fast. Netflix considers adding free ad-supported TV

Twitter nugget

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- Amol