Counter-Strike: Global Offensive Items Received in Trade Have a Seven-Day Trade Cooldown: Valve

Counter-Strike: Global Offensive (CS:GO) update makes CS:GO skin trading and gambling tougher than it should be.

Valve Made ANOTHER 7 Day Trade Hold (How Will It Affect CSGO?)

Counter-Strike 2 FAQ!

Steam Support :: Trading and Market Restrictions

How to Take Advantage of Face2Face Trading on DMarket, DMarket

Steam Support :: Trading and Market Restrictions

How To Use DMarket, FAQ

What If CS:GO Removed The 7 Day Trade Hold?

Explaining skin trading in CSGO

OPSkins returns to CS:GO item trading with P2P listings

Steam Community :: Guide :: Basics of Trading

How to Buy Skins on Skinport - Skinport Blog

OPSkins shutting down for good. - Lemondogs