I've been a fan of the show from the first episode and actually got thru many rounds of casting for the 2nd half of the 1st season.
They show 'abbreviated' versions of the season during the summer. They cannot show the entire season during the summer break.
The site hasn't been updated to even mention the Emmy nomination. Also, the Phoenix Arizona casting call cancellation has been up there for a long time.
Did some searches for any mention of the show being picked up for a 4th season or its cancellation. All I found was this mention:
http://www.realityblurred.com/realitytv/archives/starting_over/2006_May_17_fourth_season_unlikely