To expand on this answer, it's going to be just about impossible, going forward, to become blob-free on any popular platform. I can go into more detail if you want to know the particulars, but there's so many places in our systems containing blobs, far more than in 2000, and as fast as we seem to stamp them out, new blobs crop up.
Not possible on any popular ARM products of which I am aware (e.g. most of chips have a ROM in the CPU mask which is closed and not replaceable); definitely not an option on anything new from Intel. And it's really a matter of a tradeoff. The Chromebooks come with blobs, it is true; but the EC is blob-free. You can get AMD-based laptops, maybe with coreboot, and they'll come with a closed EC with blobs. The wonderful work on the X60 and X201 has gone very far, but the EC blob remains. It's a really hard problem!
At this point it's harder and harder to escape the Blob. It eats you alive! http://www.youtube.com/watch?v=TdUsyXQ8Wrs
I think the idea of creating blob-free systems continues to be a wonderful idea, one that I'd love to see happen some day.
ron