It is interesting to note that you are encouraged to sign in with your Google account when you install the app - the search firm is keen both to reinforce its relationship with users and to improve its data collection.

BBC: Google, Flickr - and the app wars

Mesh collaboration works because ideas get exposed to a much larger collection of people to whom you have only a limited or perhaps no relationship.

FORBES: Come On Now, Hit 'Submit'

The same year saw the publication of "Picasso 1881-1973, " a collection of essays co-edited with Roland Penrose that included his own seminal discussion of Picasso's complex relationship to the Surrealist movement.

WSJ: John Golding | Cubism's Vasari | By Elizabeth Cowling