[Ryu]

ALl of them are japanese attempt to pronounce english words using Katakana alphanets.

オール is rarely used singularly. It's more often used in conjunction with another katakana word. for example, オールスター (all star) is a common usage.

デー.com sounds like a joke to me. (pls don't feel bad. i am just giving my frank opinion.)

バーチャル is often used.