Which company do you wish had a developer API?
petercooper: eBuyer.com - they're like the NewEgg of the UK. They have some great bargains from time to time but you always have to visit their site to dig around for them.. they have no Twitter feed, no blog, no API for their products, no affiliate program.. it sucks because otherwise they're the best place to buy computer parts/gadgets/techie gear here.A more general answer is.. ALL e-commerce sites. Preferably with a standardish API so that you can do stuff like put together comparison engines easily without scraping HTML.