<P> Many reviewers criticized it: as the home lens is the natural means to search for content on the local machine, reviewers were concerned about the disclosure of queries that were intended to be local, creating a privacy problem . The feature is active by default (instead of opt - in) and many users could be unaware of it . </P> <P> On 23 September 2012, Mark Shuttleworth defended the feature . He posted "the Home Lens of the Dash should let you find * anything * anywhere" and that the shopping lens is a step in that direction . He argued that anonymity is preserved because Canonical servers mediate the communication between Unity and Amazon and users could trust Ubuntu . Ubuntu Community Manager Jono Bacon posted "These features are neatly and unobtrusively integrated into the dash, and they not only provide a more useful and comprehensive dash in giving you visibility on this content, but it also generates revenue to help continue to grow and improve Ubuntu ." Steven J. Vaughan - Nichols from ZDNet said the feature does not bother him and wrote "If they can make some users happy and some revenue for the company at the same time, that's fine by me ." Ted Samson at InfoWorld reported the responses from Shuttleworth and Bacon but still criticized the feature . </P> <P> On 29 October 2012, the Electronic Frontier Foundation criticized the problem . It argued that since product images were (as of October 2012) returned via insecure HTTP then a passive eavesdropper--such as someone on the same wireless network--could get a good idea of the queries . Also, Amazon could correlate the queries with IP addresses . It recommended Ubuntu developers make the feature opt - in and make Ubuntu's privacy settings more fine - grained . It noted that the Dash can be stopped from searching the Internet by switching off "Include online search results" in Ubuntu's privacy settings . </P> <P> On 7 December 2012, Richard Stallman claimed that Ubuntu contains spyware and should not be used by free software supporters . Jono Bacon rebuked him; he said that Ubuntu responded and implemented many of the requirements the community found important . </P>

What is the default ubuntu 16.04 desktop interface called