Some providers seem to drop out for several months then get back in the game.  It would be nice if there was a way to notify me (via account email) if a girl in My Favorites has a freshly posted review.

Set the "sort by' feature in your favorites by most recent activity.

 
That way, if a gal gets a new review, you can know this because she will rise to the top, and the date that happened will be displayed.

...of a new review for one of your favorites. Go to your account manager and check the box to be sent an e-mail when a favorite is updated. You will get an e-mail when a new review is posted.