Its not false advertising, because there is 2 gigs, just not working together. I mean its like saying that dual core CPUs are false advertising for not doubling the performance.
Its 2 gigs, 1 per pcb (per card in simple terms or per gpu), its basically mirroring 1 gig. So technically there is 2 gigs on the card, just not being used as 2 gigs, its being used as 1:)
I might have repeated myself, but I'm a little tired:)
I'm going to go play some Dreamcast bye bye:D