The chat, which starts just thirty-minutes before the east coast broadcast of the Lost retrospective special, will be accessible using your Facebook, Twitter or MySpace accounts. For a show that has had such a strong online following, we think this is a pretty shrewd move on ABC's part.
Keep in mind that if you join in the chat after 9pm eastern time, it's possible you could catch some spoilers regarding the finale, so west coast fans, it's probably better to get offline at 6pm until the finale starts on your end.
On Facebook, ABC has created an event for the Lost Series Finale that includes a full schedule of the television events.
Earlier today, the Lost producers posted a link to a special musical tribute montage created and edited by Alex Levy, the music editor for the show.
Will you be chatting about Lost online tonight? What are your plans for staying spoiler-free? Let us know!