Every new service tries to advertise itself to the world, to get users, but users is a limited resource, and there's a bit of zero-sum game that -- the more users you take from one community and make active in another community, the less users (or their activity) that other community will have.
There's even more problems with bringing communities together -- namely, teaching users from other communities about the patterns of writing other kind of content.
For example, one might think of 0oo as a combination of:
- Lifeboat.com / Foresight.org
- Halfbakery.com / WhyNot.net
- Pioneer.app / IndieHackers.com
- Craiglist.org / Ebay.com
All of these communities know how to do their bit well:
- Lifboat/Foresight knows well how to raise questions and seek what is important.
- Halfbakery/WhyNot knows how to introduce and judge innovative ideas.
- Pioneer/IndieHackers knows how to track progress about startup-like projects.
- Craiglist/Ebay knows how to make people trade products.
Luckily, we have (or can make) APIs of all those systems. What Supra-Community as Application would be, is a UI experience that integrates a user with those 4 systems -- automatically registers them users on those systems, and enables to publish and connect content across those sustems.
