'Nightline' Daily Line, Jan. 9: Careful What You Post Online

5:32 p.m. ET: Will this goofy signature be on your next dollar bill?

Credit: Whitehouse.gov

Jack Lew, the presumed frontrunner to replace Tim Geithner as President Obama's Treasury secretary, is taking fire today for his messy John Hancock.

The scrawled name which New York Magazine called "the world's worst signature" would appear on all U.S. dollar bills if Lew is nominated and confirmed as secretary.

Read ABC's Sarah Parnass' full story HERE

3:40 p.m. ET: To our viewers, we thank you:

"Nightline" #1 at 12:35am: Bests "Ferguson" and "Fallon" in New Time Period

Full press release HERE

1:37 p.m. ET: UPDATE: Hours before James Holmes allegedly carried out a massacre at a Colorado movie theater he took a series of menacing self-portraits with his dyed orange hair curling out of from under a black skull cap and his eyes covered with black contacts.

Read all of the new developments in Holmes' trial HERE and follow ABC's Clayton Sandell (@Clayton_Sandell) for the latest.

Credit: RJ Sangosti/AP Images

11:40 a.m. ET: Have you ever you posted photos of yourself passed out at a keg party or smoking dope on Facebook or Twitter?

If yes, then it's possible you are hurting your job prospects. A recent CareerBuilder.com survey found that two out of five companies - 37 percent - comb through potential employees' social networks to see what they have been up to when they apply for a job.

Read more HERE and watch "Nightline" TONIGHT for our full report

10:02 a.m. ET: In case you missed it…

Last night, "Nightline" profiled Robert Peterson, 22, who is one of the latest and youngest people to latch onto many of the beliefs of a growing underground movement known as "sovereign citizens." Watch what happened HERE: