Think these screenshots of Microsoft's Bing search engine and travel website Kayak look similar? So does Kayak, and an independent software-copyright attorney contacted by GigaOm. Can you tell which is which?

Travel search engines Kayak and Sidestep will merge to form a new company, according to reports. As part of the deal, Kayak raised another $196 million from current investors Sequoia Capital, General Catalyst Partners and Accel Partners as well as from Sidestep investors Norwest Venture Partners and Trident Capital…