Why you should not use plotbot.
For any who are considering using this site, look elsewhere. It's a great idea with missing features, fatally inconsistent saves and autosaves, as well as non-existent customer service.
If you miraculously finish a script using this site and turn it into any serious writer, they will tell you the formatting is incredibly juvenile. I proofread for an NBC staff writer. He would never use plotbot and I'm sorry I did.
When I lost after clicking save several times throughout my hours of writing, I tried to contact customer service to no avail. This site could be an amazing resource for collaborative writers, but in its current form you cannot trust it to save your work or format it properly.