system initially used a full screen web browser window as its interface, and contained limited offline functionality. Later versions of ChromeOS introduced a traditional desktop interface and a platform allowing "native" packaged software written in HTML, JavaScript, and CSS to be developed for the platform. Other Netbooks have sparked the development of several Linux variants or completely new distributions, which are optimized for small screen use and the limited processing power of the Atom or ARM processors which typically power netbooks. Examples include Ubuntu Netbook Edition, EasyPeasy, Joli OS and MeeGo. Both Joli OS and MeeGo purport to be "social oriented" or social networking operating systems rather than traditional "office work production" operating systems. Netbook users can also install other UNIX-based operating systems such as FreeBSD, NetBSD, OpenBSD, and Darwin. Since 2010, major netbook manufacturers no longer install or support Linux in the United States. The reason for this change of stance is unclear, although it coincides with the availability of a 'netbook' version of Windows XP, and a later Windows 7 Starter and a strong marketing push for the adoption of this OS in the netbook market. However, companies targeting niche markets, such as System76 and ZaReason, continue to pre-install Linux on the devices they sell. The Cloud operating system attempts to capitalize on the minimalist aspect of netbooks. The user interface is limited to a browser application only. Mac OS X has been demonstrated running on various netbooks as a result of the OSx86 project, although this is in violation of the operating system's end-user license agreement. Apple has complained to sites hosting information on how to install OS X onto non-Apple hardware (including Wired and YouTube) who have reacted and removed content in response. One article nicknamed a netbook running OS X a "Hackintosh." The MacBook Air can be considered an expensive netbook. Use A June 2009 NPD study found that 60% of netbook buyers never take their netbooks out of the house. Special "children's" editions of netbooks have been released under Disney branding; their low cost (less at risk), lack of DVD player (less to break) and smaller keyboards (closer to children's hand sizes) are viewed as significant advantages for that target market. The principal objection to netbooks in this context is the lack of good video performance for streaming online video in current netbooks and a lack of speed with even simple games. Adults browsing