What is the ruling on trading currencies, gold, oil, and commodities through websites that require a monetary deposit and only offer consultations?

We have previously clarified the Sharia rulings concerning the trading of currencies and gold, and the condition of instantaneous possession (qabd) at the time of the contract. These conditions are difficult to fulfill in electronic trading, hence it is not advisable to invest in such a manner. However, the basic principle regarding selling is permissibility, provided that the Sharia conditions are met.