Basically users on Twitter sent messages to Yoko and she answered them on the Imagine Peace website.
I found her answers to be really amazing, and at times I honestly got very teared up (eg, when she talks about how "it'll be fine" if nobody remembers her), but I loved her humour too (the rowboat in space question, for one).
And The Beatles: Rock Band is mentioned too!
How do you think John would have felt about The Beatles: Rock Band?
He would have loved it. The Beatles: Rock Band is about to create another revolution.