400,000 words!!! That would be amazing, I feel so spoiled!! I'll definitely fill out the survey now and I reblogged the tumblr post as well.
Ah, I'm glad you're happy. I estimate at least 50,000 per route (though it may well be more) and then subtracted a little for potential overlap (though again, that may not be the case).
Thanks for re-blogging it on tumblr - the more ppl who see it the more chance I have of getting enough respondents. ^_^