Vote UKIP in the European Elections?

The European Elections are on June 4th. Even before the expenses scandal I was confused as to whom I would vote for. I have always been quite eurosceptic in my views, but have voted Tory the last couple of times on the basis that I know this is a party close to my own views.

However, I wonder how much of a message is sent to the leadership by the big share UKIP get in the Euro elections? And not just the Tories either, the Lib Dims and Liebour must see the loss of votes to the single issue and consider their own positions.

Now this year we have Libertas too and is a pan-European approach to reform the right way to go? It could be, but then maybe this is too long a project and the UK simply needs to re-negotiate now.

All advice welcome.

CU