The Guardian’s News Blog had a good list of sources for Burmese news. I’ll try to augment.

Niknayman’s cbox (Blogger in Burma, and associates)
Soneseayar (Burmese blogger outside the country; also has a cbox)
Irrawaddy (Burmese news site in Thailand)
Mizzima (Burmese news agency with offices in India and Thailand)
Ko-Htike (Burmese blogger in London)