xmr uses stealth adresses, so there is only one adress all users deposit to. to distinguish each deposit and credit it to the correct user ALWAYS include the payment id!
Thanks, but I'm bit confused. Where do you include your payment id? I tried to buy some on shapeshift but there's only 1 bar for 'your payment address' there, so no option to enter any id...
i see. i dont have any first hand experience with shapeshift. best way might be for you to open a webwallet at mymonero.com and than transfer the funds bought with shapeshift to you webwallet, since mymonero will allow you to inlucde the payment id in the transaction for sure.