The nearest life-bearing planet is most likely hundreds of light-years away. Faster-than-light communication doesn't mean faster-than-light travel, and nobody wants to sit in a spaceship for 200 years.
This is kind of reinventing the wheel. If I want to hear things from people in my area, why can't I just walk outside and talk to them instead of using this app?
1. Look over someone's shoulder to get their phone password
2. Take phone discreetly
3. Enter phone, add self on snapchat, put money in Swiss bank account
4. Put phone back in person's pocket
They own the most popular video hosting site, the 5th most popular social network, the most popular search engine, the fastest internet service publicly available in the US, and the most popular web browser, and you just said they don't do anything better than advertising.
I agree with most of what you said, but I personally prefer lighter text on a white background to black on white. It looks cleaner when the text is lighter.