Members of the WallStreetBets community on Reddit targeted the video game seller GameStop, and effectively coordinated a mass purchase of stock.

Dubsmash recently launched Shoutouts, a new Cameo-like feature to help creators monetize on the platform. Shoutouts enable users to pay creators to create personalized videos that live on the creator's page for 24 hours and can help boost the payers' own profile.

Reddit has acquired Brooklyn-based short-form video app Dubsmash, which is second only to TikTok when it comes to short-form video app installs.