Yesterday, CSGOBig posted a copy of a cease and desist notice supposedly sent to them by Valve. In the letter, 27 CS:GO and Dota2 gambling sites were given the order to shut down within the next 10 days, or they could face account termination or even legal action.
This letter comes after Valve posted an announcement from Erik Johnson, who works for Valve in business development, threatening action against anyone who used Steam's OpenID API for commercial purposes, including gambling. This API allows Steam users to trade in-game items with each other, and gave rise to the lucrative skin betting and skin lottery sites listed in the above letter.
It remains to be seen if all 27 sites will cease their skin gambling operations, though at least one of them has publicly promised to do so via Twitter:
It's interesting to note that CSGOBig claims to be only shutting down temporarily, meaning they believe they will be able to resume their operations at some point in the near future. In the meantime, anyone who uses these sites should immediately withdraw any skins they've deposited, otherwise they'll lose access to them until the sites come back up (if that ever happens at all).
We will keep following this story and report any future developments, as we have been doing for the past couple weeks. You can view past articles in the archives, or by going to them directly: