I love this book because it is the best badfic in so many ways. Random porn! Horrrifically hysterically funny malpropisms and desperate attempts to write "regency" dialogue without actually having read any Austen, but only writing fanfic for the Colin Firth miniseries. It is CLASSIC, in a "I think I want to remind myself that should I ever want to get paid heaps of cash to write badfic, apparently Austen fandom is the way to go".

ETA: oh oh oh, for awesome genuinely good Austen fanfic, I read Darcy & Anne and Captain Wentworth's Diary lately, and they filled me with glee.

EMETA: could have been posted online

I think it actually was originally published on FFN. I remember when I first read it, googling the author and found out it came from online fandom. It was either Mr Darcy Takes a Wife, or The Darcys and the Bingleys.