From Guardian letters this morning:

Max von Thun decries “more than a decade of disastrous government under the Conservatives”. Mr von Thun may not remember, but no one else should forget that five of those disastrous Tory years were enabled by the Lib Dems voting for & providing intellectual heft to George Osborne’s austerity budgets, the core reason for the social, economic and political disasters we have endured and continue to endure. 
Alex Gallagher
Largs, Ayrshire

Absolutely right!! 

 @43d7c4ea If we want proportional representation, then the coalition that the Lib Dems had with the Conservatives will be common. There will be horse trading where the minority player gets some of its policies in, in return for voting for policies of the other party. Which is what we saw then. Lib Dems ticked off several key manifesto items, despite only holding a small fraction of the seats. Blame the Conservatives for their policy, don't pass the buck.