It appears that the Tory candidate for Henley is making use of Google ads and his advert sometimes appears on this blog and other political blogs.
So ... if you are feeling naughty and want to cost the Tories a bit of cash, why not look through the ads on everyone's blogs and click on the ones from Henley Tories.
That should cost them a few quid.
P.S. Likewise, I would be stunned if anyone changed their vote by clicking on a paid for Google ad, so if tories click on the link to the Lib Dem candidate it might make the party realise this is a stunning waste of cash.