Kelkoo.com was founded in 1999 by Pierre Chappaz and Mauricio Lopez. Within 2 years of launching, Kelkoo became Europe's largest e-commerce website after Amazon and Ebay and the largest e-commerce advertising platform both in the UK and Europe by merging with Zoomit, Dondecomprar and Shopgenie.
In April 2004 Kelkoo was acquired by Yahoo! Inc and is now a wholly owned subsidiary.
Yahoo! Groups is an electronic mailing list service provided by Yahoo!. Over the years, Yahoo! bought several other mailing list providers, including the popular eGroups, and combined them with Yahoo! Clubs into one system. Thus, Yahoo! Groups is now by far the most popular and well-known provider of electronic mailing list facilities.
Yahoo! Games, formally GamesDomain.com is the section of the Yahoo! website in which Yahoo! users can play games either with other users or by themselves. The games on the website are typically Java applets, but there are others which require the program to be downloaded. Yahoo! Games also includes Yahoo! Games Domain–which provides news, previews and reviews of currently available or upcoming First Party games–and Yahoo!
eGroups.com was an email list management web site. The site allowed users to create their own mailing lists, and allow others to sign up for membership on the list. The web site provided archives of the messages as well as list management functionality. Each group also had a shared calendar, file space, group chat, and a simple database.
The Yahoo! Directory is a web directory which rivals the Open Directory Project in size. The directory was initially Yahoo!'s primary offering. When Yahoo! changed to crawler-based listings for its main results in October 2002, the human-edited directory's significance dropped, but it is still being updated. Yahoo!
Yahoo! Calendar is a Web-based calendar service from Yahoo! It is one of the biggest online calendar providers on the Internet, serving millions of users (others include Hotmail).