If you have kids who game you won't want to know, but will need to hear, that "paedophile hunting" is a booming genre of social media content.

Roblox, an online gaming platform, is currently one of the most popular games, with 70 million daily active users, half of whom are under 13.

Roblox shares slid more than 20% in early trading, as the gaming giant dialed back its forecasts for growth and first-quarter earnings showed player spending is slowing.