Database Timestamp ?

Hi guys

Quick question regarding database automatic timestamps.

From the User Guide ...

$useTimestamps

This boolean value determines whether the current date is automatically added to all inserts and updates. If true, will set the current time in the format specified by $dateFormat. This requires that the table have columns named ‘created_at’ and ‘updated_at’ in the appropriate data type.

$dateFormat

This value works with $useTimestamps to ensure that the correct type of date value gets inserted into the database. By default, this creates DATETIME values, but valid options are: datetime, date, or int (a PHP timestamp).

Which do you use and why?

Does the datetime option use the MySql timestamp, or is this not used at all.

Thanks