Haha, yes, I did back that project, and continually poked those guys during the unfolding development process.
And I was not the only one... the other Linux folks (as well as the Mac backers, actually) joined me in gently reminding them periodically to bring us up-to-date on the project.
They got within $3K of the porting stretch goal at the time of funding the Kickstarter (PayPal included) and kept open their PayPal for a while after the campaign closed, and confirmed that the monies would go toward stretch goals.
And then they stopped updating us on PayPal (which indicated, to me, that they'd reached the stretch goal but didn't want the pressure from Linux/Mac folks until after the main release). They did state in their update #26 in January that they will, for certain, do the ports... so it's really good for Liam to apply some journalistic pressure on that commitment