M. Ackerman, The Intellectual Challenge of CSCW: The Gap Between Social Requirements and Technical Feasibility, Human-Computer Interaction, vol.2, issue.3, pp.181-203, 2000.
DOI : 10.1145/245108.245122

T. J. Allen, Managing the Flow of Technology, 1977.

M. Argyle and M. Cook, Gaze and Mutual Gaze, 1976.

D. Avrahami, S. Fussell, and S. Hudson, IM waiting, Proceedings of the ACM 2008 conference on Computer supported cooperative work, CSCW '08, pp.285-294, 2008.
DOI : 10.1145/1460563.1460610

J. N. Bailenson, A. C. Beall, J. Blascovich, and M. Turk, Transformed Social Interaction: Decoupling Representation from Behavior and Form in Collaborative Virtual Environments, Presence: Teleoperators and Virtual Environments, vol.3, issue.9, pp.428-441, 2004.
DOI : 10.1037/0033-295X.96.3.395

L. Bartram, C. Ware, and T. Calvert, Moticons:, International Journal of Human-Computer Studies, vol.58, issue.5, pp.58-513, 2003.
DOI : 10.1016/S1071-5819(03)00021-1

J. Begole, N. Matsakis, J. Tang, and . Lilsys, Inferring Unavailability Using Sensors, Proc. ACM CSCW, pp.511-514, 2004.

S. Benford and L. Fahlen, A Spatial Model of Interaction in Large Virtual Environments, Proc. ECSCW, pp.109-124, 1993.
DOI : 10.1007/978-94-011-2094-4_8

J. Birnholtz and . Adopt, Adopt, adapt, abandon: Understanding why some young adults start, and then stop, using instant messaging, Computers in Human Behavior, vol.26, issue.6, pp.1427-1433, 2010.
DOI : 10.1016/j.chb.2010.04.021

J. Birnholtz, C. Gutwin, and K. Hawkey, Privacy in the open, Proceedings of the 2007 international ACM conference on Conference on supporting group work , GROUP '07, pp.51-60, 2007.
DOI : 10.1145/1316624.1316632

J. Birnholtz, C. Gutwin, G. Ramos, and M. Watson, OpenMessenger, Proceeding of the twenty-sixth annual CHI conference on Human factors in computing systems , CHI '08, pp.1661-1664, 2008.
DOI : 10.1145/1357054.1357313

J. Birnholtz, L. Reynolds, M. Mustafa, E. Luxenberg, and C. Gutwin, Awareness Beyond the Desktop: Exploring Attention and Distraction with a Projected Peripheral-Vision Display, Proc. Graphics Interface, 2010.

J. Birnholtz and D. Tang, Sharing Awareness Information Improves Interruption Timing and Social Attraction(in preparation

J. E. Booker, C. M. Chewar, and J. Mcgrenere, Usability testing of notification interfaces, Proceedings of the 42nd annual Southeast regional conference on , ACM-SE 42, pp.128-133, 2004.
DOI : 10.1145/986537.986568

M. Boyle and S. Greenberg, The language of privacy, ACM Transactions on Computer-Human Interaction, vol.12, issue.2, pp.328-370, 2005.
DOI : 10.1145/1067860.1067868

M. Chau and M. Betke, Real Time Eye Tracking and Blink Detection with USB Cameras, 2005.

H. H. Clark, Using language, 1996.

A. Clement, Considering privacy in the development of multi-media communications, Computer Supported Cooperative Work, vol.36, issue.no 1???2, pp.67-88, 1994.
DOI : 10.1145/159544.159617

L. Dabbish and R. Kraut, Controlling interruptions, Proceedings of the 2004 ACM conference on Computer supported cooperative work , CSCW '04, pp.182-191, 2004.
DOI : 10.1145/1031607.1031638

S. Davis and C. Gutwin, Using Relationship to Control Disclosure in Awareness Servers, Proc. Graphics Interface '05, pp.75-84, 2005.

P. Dourish and V. Belotti, Awareness and coordination in shared workspaces, Proceedings of the 1992 ACM conference on Computer-supported cooperative work , CSCW '92, pp.107-114, 1992.
DOI : 10.1145/143457.143468

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=

P. Dourish and S. Bly, Portholes, Proceedings of the SIGCHI conference on Human factors in computing systems , CHI '92, pp.541-547, 1992.
DOI : 10.1145/142750.142982

R. S. Fish, R. Kraut, and B. Chalfonte, The VideoWindow system in informal communication, Proceedings of the 1990 ACM conference on Computer-supported cooperative work , CSCW '90, pp.1-11, 1990.
DOI : 10.1145/99332.99335

J. Fogarty, C. Au, and S. Hudson, Sensing from the basement, Proceedings of the 19th annual ACM symposium on User interface software and technology, UIST '06, pp.91-100, 2006.
DOI : 10.1145/1166253.1166269

J. Fogarty, J. Lai, and J. Christensen, Presence versus availability: the design and evaluation of a context-aware communication client, International Journal of Human-Computer Studies, vol.61, issue.3, pp.3-299, 2004.
DOI : 10.1016/j.ijhcs.2003.12.016

A. Frischen, A. P. Bayless, and S. P. Tipper, Gaze cueing of attention: Visual attention, social cognition, and individual differences., Psychological Bulletin, vol.133, issue.4, p.694, 2007.
DOI : 10.1037/0033-2909.133.4.694

URL : http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1950440

W. Gaver, T. Moran, A. Maclean, and L. Lovstrand, Realizing a video environment, Proceedings of the SIGCHI conference on Human factors in computing systems , CHI '92, pp.27-35, 1992.
DOI : 10.1145/142750.142754

E. Goffman, The presentation of self in everyday life. Anchor Books, 1959.

S. Harrison, Media space 20+ years of mediated life, 2009.
DOI : 10.1007/978-1-84882-483-6

C. Heath, P. Luff, and A. Sellen, Reconsidering the Virtual Workplace: Flexible Support for Collaborative Activity, Proc. ECSCW, pp.83-99, 1995.
DOI : 10.1007/978-94-011-0349-7_6

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=

S. T. Iqbal and B. P. Bailey, Understanding and developing models for detecting and differentiating breakpoints during interactive tasks, Proceedings of the SIGCHI conference on Human factors in computing systems , CHI '07, pp.697-706, 2007.
DOI : 10.1145/1240624.1240732

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=

E. Isaacs, J. Tang, T. Morris, and . Piazza, A desktop environment supporting impromptu and planned interactions, Proc. ACM CSCW, pp.315-324, 1996.

S. Kastner and L. G. Ungerleider, Mechanisms of Visual Attention in the Human Cortex, Annual Review of Neuroscience, vol.23, pp.315-341, 2000.

A. Kendon, Conducting interaction: patterns of behavior in focused encounters, 1990.

R. Kraut, C. Egido, and J. Galegher, Patterns of contact and communication in scientific research collaboration, Proceedings of the 1988 ACM conference on Computer-supported cooperative work, CSCW '88, pp.1-12, 1988.
DOI : 10.1145/62266.62267

D. S. Mccrickard, M. Czerwinski, and L. Bartram, Introduction: design and evaluation of notification user interfaces, International Journal of Human-Computer Studies, vol.58, issue.5, pp.58-509, 2003.
DOI : 10.1016/S1071-5819(03)00025-9

G. Mcewan and S. Greenberg, Supporting social worlds with the community bar, Proceedings of the 2005 international ACM SIGGROUP conference on Supporting group work , GROUP '05, pp.21-30, 2005.
DOI : 10.1145/1099203.1099207

D. C. Mcfarlane and K. A. Latorella, The Scope and Importance of Human Interruption in Human-Computer Interaction Design, Human-Computer Interaction, vol.9, issue.1, pp.1-61, 2002.
DOI : 10.1348/096317999166581

L. Nummenmaa and A. J. Calder, Neural mechanisms of social attention, Trends in Cognitive Sciences, vol.13, issue.3, pp.135-143, 2008.
DOI : 10.1016/j.tics.2008.12.006

D. O. Olguin, P. A. Gloor, and A. Pentland, Capturing individual and group behavior with wearable sensors, Proc. of the AAAI Spring Symposium on Human Behavior, 2009.

T. Rodden, Populating the application, Proceedings of the 1996 ACM conference on Computer supported cooperative work , CSCW '96, pp.87-96, 1996.
DOI : 10.1145/240080.240200

K. Schmidt, The Problem with `Awareness': Introductory Remarks on `Awareness in CSCW', Computer Supported Cooperative Work (CSCW), vol.1, issue.1???2, pp.285-286, 2002.
DOI : 10.1007/978-94-015-7372-6_11

D. Sudnow, Temporal parameters of interpersonal observation, Studies in Social Interaction, 1972.

J. Tang, Approaching and leave-taking, ACM Transactions on Computer-Human Interaction, vol.14, issue.1, pp.1-26, 2007.
DOI : 10.1145/1229855.1229860

S. Whittaker, D. Frohlich, and O. Daly-jones, Informal Workplace Communication: What is It Like and How Might We Support It?, Proc. ACM CHI, pp.131-137, 1994.