Actually, the answer to that question is far simpler, and is worth nothing in the scheme of things.. the effect of the "chittering" noise that it makes is the sound of a New York taxi's receipt printer. Rose is from Brooklyn. That's all it is.. it literally just sounded familiar to her, there's no connection there at all.
The more interesting question after this last episode is how the monster can make those noises long before any mechanical device existed that could make those sounds. It's been theorized that back in Season 1, it was making noises pulled from the memories of the Losties, in order to sound more "scary", but now we know it was making those noises at least 150 years earlier.
Is anybody else disappointed in how young Richard really is? They kept implying this huge length of time that he'd been on the island.. "He's had that job for a very.. VERY long time." "Longer than you can possibly imagine!!" and "Richard? He's always been here." I'd gotten the impression from all of that that he'd been there a lot longer than a measly 150 years. I was thinking more like thousands of years, from the Egyptian times. Now, I know 150 years is a really long time for a normal person, but the Island ain't exactly normal.