I guess you cant read the rest for the link.
In an update to the original article PayPal had this to say;
BI: Are you using OpenStack in addition to other cloud tech like VMware’s? Are you using it instead of VMware?
PayPal: VMware provides important technologies for PayPal’s platform. However, we do leverage a few cloud technologies including OpenStack, VMware and Red Hat so that we can architect our infrastructure to enable choice and deliver agility for our business.
BI: Is this an experiment or is it production?
PayPal: PayPal’s OpenStack project is already in production.
BI: How big a commitment have you made to OpenStack? Are you eventually using it on all your servers? Some of them?
PayPal: PayPal’s strategy is to leverage open source products and provide meaningful insight and contribution to help advance the ecosystem. OpenStack is one of the key projects in this overall strategy.