In response to Ian Buruma's Europe's far-right revival isn't Nazism:

The test of whether a political group is worth supporting shouldn't rely on whether they're 'right' or 'left', pro-Islam or anti Islam.

If the political party or group:

1. Alarms local Jews

2. Alarms the Israeli government

3. Opposes sanctions against and seeks to ally with Islamist regimes like Iran.

4. Seeks to deport or restrict the rights of citizens based, not on the crimes they may have committed or on their alliances with terrorist regimes, but instead based on race, sex, religion or ideological purity...

..then they are probably not worth supporting. The Austrian FPO fits 1-3.