Page History

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Task	Goal	Frequency	Effort	Pitfalls
Add contact	To ensure the identity (or psudo-identity) of the intended recipient	sometimes	medium
Find Public Conversations	To discuss a topic	semi-often	medium	potentially lots of information
Erase evidence of communication	Break contact or association	rarely	easy	unsafe (can't undo)

Task	Goal	Frequency	Effort	Others Involved
Have a Group Conversation	Converse with a closed group	rarely	medium (setup/allow users)	Other group members
Have a Public Conversation	For general discussions	semi-often	easy (name and go)	Anyone
Have a Private Conversation	For private communication	often	easy	The recipient

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Task	Goal	Frequency	Effort	Pitfalls	Others Involved
Join	Join a group public conversation	sometimes	medium	Requires the controller to add the user to the conversation	easy	Controller
Leave	Remove oneself from a group public conversation	sometimes	easy	Unsafe (for security reasons, undo will be impossible).
Send	Send a message to a group public conversation	often	easy	Potential to send a private message to wrong persona public chat.	The group receivers
Receive	Receive a message	often	none		The group sender
Log	Keep a log of messages	background	none	Some users may not want to be logged. Removal must be thorough.

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medium Controller
Leave

Task	Goal	Frequency	Effort	Pitfalls	Others Involved	Join	Join a group conversation	sometimes		Requires the controller to add the user to the conversation
Remove oneself from a group	sometimes	easy	Unsafe (for security reasons, undo will be impossible).		Send	Send a message to a group another person	often	easy	Potential to send message to wrong person.	The group recipient
Receive	Receive a message	often	none		The group recipient
Log	Keep a log of messages	background	none	Some users may not want to be logged. Removal must be thorough.

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