The Free Democratic Party (FDP), Germany's liberal political party, has launched its latest internet ad highligthing the party's central motto for the upcoming federal election: "Strengthening the middle." . The FDP has seen its poll numbers go up in the last months due to the public's dissatisfaction with the two major parties, the Christian Democrats and the Social Democrats, which have been governing Germany in an odd 'grand coalition' since 2005. According to the latest polls, The FDP -wh...