Comment Don't just vote, do something! (Score 2, Informative) 214
Having spent a few years as a lobbyist in the European Parliament during the EU software patents directive, I can tell you that it's very easy to affect the MEPs.
I learned that they're mostly lost, and the centre-left guy will vote your way just as quickly as the centre-right guy will, so which one you voted for doesn't make a huge difference, but talking to them does. (FWIW, the best party in there is clearly the Greens.) Tell them your concerns and show them your evidence. Showing evidence is essential so they can justify their vote.