Dan Choi announced today that he is boycotting MSNBC over the network's suspension of Keith Olbermann.

"I'm declining interviews on MSNBC and affiliates until @KeithOlbermann is reinstated," Choi wrote on his Twitter page.

Choi, an outspoken critic of the military's "Don't Ask, Don't Tell" policy, has been a frequent guest on MSNBC shows. He announced that he is gay on Rachel Maddow's show last year.

According to Adam Green of the Progressive Change Campaign Committee, MSNBC asked Choi to appear on the network on Monday, and Choi declined.

Choi also encouraged his followers to sign a petition organized by the PCCC to reinstate Olbermann. To date, close to 270,000 people have signed the petition.

