I see nothing on that site that would make me trust it with my data. It says it won't monetize through ads, but how will it monetize? Is my data involved other than through targeting ads at me? ? Why should I trust a centralized, unfederated service with my data as opposed to one that I could host myself (such as Diaspora)?

The site has a vague privacy policy of sorts related to its Google Analytics, but that doesn't have anything to do with the data that I would actually upload and store on the site for 'social networking' purposes.

Also the site itself feels very overproduced; back button is broken et cetera.

I agree completely with the criticism of other services in the "manifesto," but nothing about the site suggests its a viable alternative.