17. Discretionary

If groupware doesn't appeal to discretionary use, it has less of a chance of appealing to users. If there is a shortage of users, then the collaborative functions of groupware don't get used anyway. Features that appeal to discretionary use invite users to keep the groupware running for them selves, making it more likely for it to work as a medium for collaboration with others opportunististically.

Example(s): New generation electronic calendar systems (schedule+, calendar manager). Features that appeal to discretionary use are meeting reminders, to do lists.

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