For the first question, I voted for 'I realize the story isn't actually finished' and 'Other'. Actually, it's a combination for both - I finish a story, and then think it could continue, so I write something more. Both my sequels though were for short stories (I haven't written anything long yet, anyway
)
For the second question, I voted for 'I don't usually know until I've been writing the original', which, at the moment, is what I've been doing.
Interesting poll
See ya,
AnnaBtG.
