As for where preferences go, make sure you choose yourself. Always number your preferences in your order of preference, don't take the party's suggestions (you know the idiot-sheet-hand-outs they give you as you arrive to vote).
I do, but I also know that not everyone does and the thought that people are going to vote blindly for a single-issue party like this and the votes going who-knows-where is, quite frankly, a little bit scary.
I guess I'm also not the biggest fan of single-issue parties - they can only ever be lobbyists. It sometimes works, but more than often doesn't.
I'm not so sure. I think in Australia really, really minor parties still have a fair chance of getting a seat... in the Senate anyway. Look at Steve Fielding, from his preferences, he scored a seat. And he's pretty much single issue too... "I will do whatever God tells me to" is what his policy boils down to in my opinion. It's too bad though that he doesn't realise that what he's hearing isn't some sort of divine intervention, but instead schizophrenia :S
But anyway, if they get a seat or not, they can still execute an influence if we give them the power to.... and if they can't even do that, they'll be able to hold the other parties to an account in a way much closer to Canberra than an organization like Animals Australia or ALV could. Lobbyists work pretty well though in Canberaa anyway though haha.
On preferences, i'm pretty sure the party execs will be careful with them. But yes, best to number them yourself.
I hope we don't let our current political system hijack democracy for us... everyone who believes in its policy should vote for it, never mind the tangible outcome of it. It sends the best message we could hope for at this point.