Mr Brin has signed up with the space tourism company Space Adventures for priority seating on a mission that would orbit the earth.
Yahoo on Tuesday attempted to bolster its case for an improved offer from Microsoft, releasing stronger-than-expected financial projections to support its decision that the proposed deal had seriously undervalued it. Microsoft made a cash-and-shares offer that was worth $44.6bn, or $31 a share, when it was announced on February 1. The financial plan was first presented to Yahoo's board in December.
Bebo, founded by Michael and Xochi Birch, said it had made its platform compatible with Facebook's. This will allow developers to make applications, such as movie ratings and photo-sharing tools, work on both sites with the minimum of alterations.