Unfortunately(or is it?) he's promoting Ubuntu the concept, not Ubuntu the software. I did rather wonder about an ex-prez notable only for getting milked by some brunette reccomending software to the Neo-Labour party.
Bill Clinton still commands a lot of respect, I'd say more then Bush and yet Clinton has not country to be president of, and actually knows who Prescott is.
Ex-presidents and prime ministers do this stuff regularly guys. They don't just stop being leader and then retire, they generally hire themselves out at horrific costs to do speechs on this or that, get behind some causes they like(like Al Gore) or become CEO's of various corps.
bremner-bird & fortune did a good one last night about clinton pimping himself out $50,000 for an appearance $25,000 for the patented bill clinton smile which brings peace to any conflict.