While looking for acting jobs in 2006, Abu-Taleb found a Craigslist posting for an independent film codenamed Children of Anchor Cove, which later turned out to be the lonelygirl15 project.
Although he was older than the character of Daniel, who was written to be 15-16, he won the role and the character was rewritten to be 18.

During the filming, before his identity was revealed, Yousef kept a low profile, keeping to his house and wearing sunglasses when he went out.
After the creators and crew came forward, he was openly interviewed by MTV and CNN.
He also appeared with Jessica Lee Rose on Tom Green Live.

lonelygirl15 won in the "biggest download" category at the VH1 Big in '06 Awards.
He also did some work alongside Carmen Electra in-character as Daniel for the promotional videos of Epic Movie, a film that parodies a number of other epic films such as The Da Vinci Code, The Chronicles of Narnia: The Lion, the Witch and the Wardrobe, and Snakes on a Plane.

As of the lonelygirl15 finale in August 2008, Yousef appeared in over 300 episodes, making him the longest-running character on the show.
Yousef also collaborated with lonelygirl15 writer-director Glenn Rubenstein to co-write the episode "Miss Me?"
and Creator Miles Beckett to film the episode "Following The Helper".
He also made a surprise appearance in the final episode of the lonelygirl15 sequel series, LG15: The Resistance, "12 Videos 12 Hours."

in 2017, Abu-taleb helped write, direct and executive produce as well as star in special episodes for the fans to see where the characters ended up over the years.
While looking for acting jobs in 2006, Abu-Taleb found a Craigslist posting for an independent film codenamed Children of Anchor Cove, which later turned out to be the lonelygirl15 project. Although he was older than the character of Daniel, who was written to be 15-16, he won the role and the character was rewritten to be 18.
During the filming, before his identity was revealed, Yousef kept a low profile, keeping to his house and wearing sunglasses when he went out. After the creators and crew came forward, he was openly interviewed by MTV and CNN. He also appeared with Jessica Lee Rose on Tom Green Live.
lonelygirl15 won in the "biggest download" category at the VH1 Big in '06 Awards. He also did some work alongside Carmen Electra in-character as Daniel for the promotional videos of Epic Movie, a film that parodies a number of other epic films such as The Da Vinci Code, The Chronicles of Narnia: The Lion, the Witch and the Wardrobe, and Snakes on a Plane.
As of the lonelygirl15 finale in August 2008, Yousef appeared in over 300 episodes, making him the longest-running character on the show. Yousef also collaborated with lonelygirl15 writer-director Glenn Rubenstein to co-write the episode "Miss Me?" and Creator Miles Beckett to film the episode "Following The Helper". He also made a surprise appearance in the final episode of the lonelygirl15 sequel series, LG15: The Resistance, "12 Videos 12 Hours." 
in 2017, Abu-taleb helped write, direct and executive produce as well as star in special episodes for the fans to see where the characters ended up over the years.
Yousef Abu-Taleb