"If I get my friends to use Flickr, it gets better for me and for them. (...) Latest things matter. There are lots of interesting slices that can be taken. Slice by user, time, tags, location, relationship to other tags, "interestingness"."
C. Marlow, M. Naaman, D. Boyd, и M. Davis. HYPERTEXT '06: Proceedings of the seventeenth conference on Hypertext and hypermedia, стр. 31--40. New York, NY, USA, ACM, (2006)