As a Roblox developer, it is currently impossible to donate to other Robloxians without buying their shirts or buying an item in your own group to add group funds.
As a Roblox developer, I and hundreds of others consistently commission developers who prefer Robux as a method of payment. I end up losing a massive amounts of Robux each month in sales taxes to add money to my group funds. This is followed by a long waiting time for that money to arrive into the account itself.
By adding a donation page or button to the website, Robloxians will be able to professionally communicate, commission and donate with the Robux currency encouraging an even deeper level of a virtual economy. This would eliminate or reduce the 30% taxes on buying shirts and other Roblox items to transfer this currency.