Google for search marketing, PayPal for online payment, DHL and UPS for delivery, Amazon for cloud computing, and Akami for web content distribution.

FORBES: Beijing Startup Builds On Shoulders Of Giants To Go Global And IPO From China

Don't go to DHL or UPS's Websites, try Santa Tracker instead.

BBC: Ding dong merrily online

FedEx, UPS, DHL and other foreign express shippers are allowed to ship boxes within China and to handle outgoing shipments of boxes as well as letters.

FORBES: Off Shore

As a result of all this, and the boom in e-commerce, the big parcel companies, such as Federal Express, UPS and DHL (not targets of the current investigation), have seen business boom.

ECONOMIST: Inspecting the cargo | The

Denver International Airport already has air cargo hangars and warehouses, and Piscitell has signed a noncompete agreement with the airport that prevents him from renting to the airport's tenants--DHL, FedEx and UPS among them--if they leave DIA and 15% of the airport's rentable space remains empty.

FORBES: Grounded

FedEx competes chiefly with UPS and Deutsche Post-owned DHL, but its general financial health is often monitored by conditions in rail companies like Union Pacific and CSX Corp.

FORBES: FedEx: Disappointing Q3 Profit Sends Another Warning About Slowing Asian Growth