What happen's next?

Over the last few days many of us have read a few newspapers and have tried to make sense of the general election result but to me it was still as clear as mud until I read this short summary by the Nosemonkey's Eutopia blog. A coalition of progressive parties in Westminster seems the obvious way forward. I just cannot see a Lib Dem/Tory coalition working out especially not on the question of PR...this has got to be the line in the sand for Clegg.