So, the idea of a deliberately pruned and simple social network is interesting. The entire "ad free" and "cruelty free" focus on Ello is nice, but is it realistic? One person's flaggable content is another's free speech - and these massive pre-existing social networks keep their services free by selling advertisers verifiable human eyeballs. Then there is the question of sites like Tumblr and Twitter were anonymity was always an option.
But what I do like is the minimalist design. At least so far!
Oh! And I noticed that social network sites tend to evolve to become useful in a particular way to particular people. Facebook might be good for, say indie filmmakers, while my Google+ is lousy with game designers and my Twitter feed is comedians and political activists. What's my Ello going to be about?