Applications need information about users at different times for different reasons. This article does a superb job of triaging the interactions.
My archives:
2012
December November October September August July June May April March February January2011
December November October September August July June May April March February January2010
December November October September August July June May April March February January2009
December November October September August July June May April March February January2008
December November October September August July June May April March February January2007
December November October September August July June May April March February January2006
December November October September August July June May April March February January2005
December November October September August July June May April March February January2004
December November October September August July June May April March February January2003
December November October September August July June May April March February January
My feed