Flashgap - Time-delayed photo-sharing app of last night's embarrassment
Product School - The global leader in product management training
Bobby - Keep track of your subscriptions
The Product Manifesto - Product Managers face the biggest challenges of our day, which is why our community needs a common set of product principles.
Rich Kids - Photo sharing app where users pay $1000/mo to share
Intercom on Product Management - The ultimate resource for aspiring product managers