Earlier this week, Facebook announced changes to its Open Graph which have huge implications to the social ecommerce platform Payvment. The two year-old Palo Alto based start-up, which already manages 80% of the ecommerce transactions on Facebook, will now be able to be integrated into the Open Graph. What this means, according to Payvment’s Founder and CEO Christian Taylor, is that we can now broadcast what we want on our Facebook pages. Such social one-click purchasing power is “big trouble” for Amazon and eBay, Taylor predicts. And even bigger trouble, I suspect, for parents who will now be inundated with gift ideas by their Facebook loving kids.