Maybe local text-to-speech is not plausible given the heavy processing and battery drain. What if instead there is a list of words/brands being listened for; my phone is always listening for "OK, Google."
All I know is that things that I have talked about with my phone around 1-2 days prior, I suddenly see ads for. Things I did not Google or mention on the Internet. In one case I started seeing ads on Instagram for a product that I posted a photo of and did not even include the product's name in the post. Dishwashing liquid that I would never even buy (I'm not the target user so it wasn't target marketing).
It's all a little too much for me to believe it's a coincidence.
It's nice to see a company writing posts with this much transparency. While it's not simple to grow a blog presence like this it does take persistence and knowing a few solid techniques. Thanks for sharing.
I personally can't blame them. It's an exact copy of their site, which makes further replications very easy and encouraged. Their letter to Luke was very nice, hardly pushy at all.
I usually present in person and don't have any huge pain points around doing it this way. I think tools like this that allow for comments to be left on a mockup is interesting but not a deal breaker: http://redpen.io
I use Dropbox the most to share files with clients. Recently I've been working on a concept for presenting mobile designs - I think this process is more broken than other types of design presentations.