Fox is propelling Twitter TV to a new level.

The network has added “official hashtags”for its hit primetime programming to the Fox logos that appear on the bottomright of the screen during broadcasts.

The new hashtag-enhanced logos began appearing during last week’s episode of “Fringe” (#Fringe) and continued this week on shows including “Glee” (#Glee) and “Bones” (#Bones).

Hashtags are used to identify keywords and topics in tweets and help track categories that are “trending” — gaining popularity— across the Twitter universe.

“We’ve noticed shows like ‘Glee’ and ‘[American] Idol’ trend while the show is on, but fans often use different hashtags,”Fox marketing president Joe Earley told TV Guide.“We thought if we provided the official hashtags, then more posts would aggregate.”