I bought a fair amount of crypto to flip in the short-term, but on the other hand I don't believe the technology has proven itself to be anything more than a fad. I'd like to see a lot more regulations put on it.
FYI, MailChimp is based in Atlanta, GA. Maybe you mean to use "Silicon Valley" as a catch-all for tech, but I don't think it's fair to associate SV with anti-ICO attitudes in this way. The anti-ICO sentiment is coming from everywhere, and I think it's pretty legitimate.
Even a cubic foot of water would be well under 100lbs. I doubt a cubic foot of mussels + water to fill the rest could weigh a ton.
It may be possible for (especially stationary structures) to accumulate enormous columns of biofouling materials, but for such a layer to reach > 20 feet thick (possibly closer to 50 feet without counting the interstitial water) sounds unreasonable. But I'm not knowledgable in this area.
I've been using the free unlimited roaming from T-Mobile on several trips to Japan, Argentina, France, and Italy. Often, the speeds are actually faster than EDGE, unless the network is busy. I have had no issues using Google/Apple Maps or booking hotels, etc. through this connection. The only thing I miss is having Hotspot capabilities, even at the reduced speeds.