When Chatter is enabled in an org, the following happens (choose all that apply).

What determines a unique User Record?

Org wants to create a follow up task based on a field change. Which is the best way to do it?

The first approval step in a process specifies the action to take if a record does not advance to that step.

A record is modified on 1/1/2008. It meets criteria for a time-based workflow rule; this rule schedules an action for 7 days after rule execution. On 1/4/2008 the record is modified and no longer meets workflow rule criteria.
On 1/5/2008 the record is modified and once again meets the initial time-based workflow rule criteria. How many workflow actions will execute and when?