I sympathise with the efforts of Strategic Voter 2005 and as a Green I sympathise with the criticism they make of Greens standing in marginal seats. In fact, at considerable political loss to our local party, I withdrew from contesting Weston s mare when it became marginal 12 years ago, in order to let the LibDem in.
However, I would like to draw your attention to the fact that IN SAFE SEATS, NOTHING HAPPENS! Voting changes nothing in Safe Seats, under First Past The Post. People are aware of this, which is why turnout is inversely proportional to winning margin .
In fact the country could save considerable trouble and expanse by holding elections in safe seats every other General Election, or every third in really safe seats, just ot test the waters.
So in safe seats, people should use their (otherwise useless) vote to further the Green cause, because their political philosophy of basing the economy on planetary ecology is the only philosophy that makes sense in the end.