We're quite a sizeable force by now

The pirates entered two regional parliaments so far with two more regional elections coming up. Polls for the upcoming federal elections peg us at about 12% of votes, which would makes us the third largest faction in the federal parliament.
The name indeed has been rooted in irony, but has not neccessarily anything to do with seafaring pirates. The party was founded five years ago, when the government started passing opressive copyright laws, which went far beyond protecting intellectual rights. Those laws granted de-facto censorship rights to the industry. Half of youtube is blocked in Germany. Effectively, due to these laws, it is now forbidden in Germany to make a safety-backup of a legally purchased CD or DVD. Although the name Pirates might imply that we condone piracy of intellectual property (which was the ironic idea behind the name), the party in fact supports protection of intellectual property, but fights for more fairness towards the customer.
The other main selling point is, that the pirates are radically democratic. Decisions are not made by a select circle of party leaders, like in all other German parties. Major decisions are always made by a poll among all registered party members.