As a potential early adopter that has seen countless would-be world-changing technology efforts come and go, in order to personally get me on the bandwagon, it would help to know a few things that didn't stand out to me at first, even after visiting the https://bloom.sh website.
(1) When I think Google I think "search" first and foremost, and I didn't see a search demo or anything. I think your average visitor is going to be thinking the same. If you're not involved in search, then branding yourself up as a Google alternative seems a bit off.
(2) How do you intend to sustain the project? Funding, grants, donations, paid plans, etc. More light on the team behind it as well perhaps, their incentives, skills, etc. I want to know that you have a reasonable chance of existing long enough to grind Google to the ground. :)
(3) A past version of myself would like to know more about "What's in it for me, like right now"? Saving the planet is all well and good, but I was a selfish short-term thinker.
(4) A future version of myself would like to know (assuming points (2) and (3) are answered to satisfaction) more about what I can do for you, but just in small ways, i.e. I don't/won't have the time to help with an iOS app. Practically speaking, this may just mean placing your donation links or "Subscribe for updates" buttons somewhere more prominent. I know some of this is included in your peer comment here on HN, so speaking about the websites only.
Anyway, good on you for releasing, and good luck! I'll be following the project!