1. A method comprising: by first program instructions on a first computing device, identifying a candidate application to be installed on the first computing device; identifying a trusted user that a user of the first computing device has identified and indicated as being trusted; receiving from a second computing device, an indication of installation activity of said candidate application by said trusted user on said second computing device; and determining whether to install the candidate application on the first computing device in dependence upon the indication of installation activity.
1. A method comprising: by first program instructions on a first computing device, identifying a candidate application to be installed on the first computing device; identifying a trusted user that a user of the first computing device has identified and indicated as being trusted; receiving from a second computing device, an indication of installation activity of said candidate application by said trusted user on said second computing device; and determining whether to install the candidate application on the first computing device in dependence upon the indication of installation activity. 4. The method of claim 1 wherein identifying the trusted user includes identifying types of installation activity associated with each trusted user.