Facebook notification sounds can be heard throughout the fourth season of Arrested Development.
About[]
The producers of Arrested Development knew that a lot of people would be watching Netflix on their computers, so they threw in some Facebook sounds purely to mess with them.
Occurrences[]

A Facebook notification sound can be heard when Michael is kicking a tumbleweed in "Flight of the Phoenix"

A Facebook notification sound can be heard when Lindsay is talking to Marky Bark in the Bluth Penthouse in "Red Hairing"

A Facebook notification sound can be heard when Maeby is being chased by Cindy the Ostrich in "Señoritis"