"À ta place, je n'achèterais rien sur ce site."

Translation: If I were you, I wouldn't buy anything on this website.

[Neil1945]

Off this web site should also be accepted.

[LenReed]

Off = on. ;) You're right, of course. Also from and at.

[Stick.to.it]

I buy things from websites, not on or off.

[JenniferSe809267]

This horrible squeaky voice should be silenced for ever.

[Valkenier]

Is it wrong to shorten "website" to "site" in the English language?